diff --git a/packages/react-dom/src/client/ReactDOM.js b/packages/react-dom/src/client/ReactDOM.js
index 0de484d48cf..ce6a9e40687 100644
--- a/packages/react-dom/src/client/ReactDOM.js
+++ b/packages/react-dom/src/client/ReactDOM.js
@@ -31,7 +31,6 @@ var invariant = require('fbjs/lib/invariant');
 
 var ReactDOMComponentTree = require('./ReactDOMComponentTree');
 var ReactDOMFiberComponent = require('./ReactDOMFiberComponent');
-var ReactInputSelection = require('./ReactInputSelection');
 var ReactBrowserEventEmitter = require('../events/ReactBrowserEventEmitter');
 var DOMNamespaces = require('../shared/DOMNamespaces');
 var {
@@ -116,7 +115,6 @@ type HostContextProd = string;
 type HostContext = HostContextDev | HostContextProd;
 
 let eventsEnabled: ?boolean = null;
-let selectionInformation: ?mixed = null;
 
 /**
  * True if the supplied DOM node is a valid node element.
@@ -219,13 +217,10 @@ var DOMRenderer = ReactFiberReconciler({
 
   prepareForCommit(): void {
     eventsEnabled = ReactBrowserEventEmitter.isEnabled();
-    selectionInformation = ReactInputSelection.getSelectionInformation();
     ReactBrowserEventEmitter.setEnabled(false);
   },
 
   resetAfterCommit(): void {
-    ReactInputSelection.restoreSelection(selectionInformation);
-    selectionInformation = null;
     ReactBrowserEventEmitter.setEnabled(eventsEnabled);
     eventsEnabled = null;
   },
diff --git a/packages/react-dom/src/client/ReactDOMSelection.js b/packages/react-dom/src/client/ReactDOMSelection.js
index 886a4af6f49..51a5de8a051 100644
--- a/packages/react-dom/src/client/ReactDOMSelection.js
+++ b/packages/react-dom/src/client/ReactDOMSelection.js
@@ -16,7 +16,11 @@ var {TEXT_NODE} = require('../shared/HTMLNodeType');
  * @return {?object}
  */
 function getModernOffsets(outerNode) {
-  var selection = window.getSelection && window.getSelection();
+  var win = window;
+  if (outerNode.ownerDocument && outerNode.ownerDocument.defaultView) {
+    win = outerNode.ownerDocument.defaultView;
+  }
+  var selection = win.getSelection && win.getSelection();
 
   if (!selection || selection.rangeCount === 0) {
     return null;
@@ -153,11 +157,13 @@ function getModernOffsetsFromPoints(
  * @param {object} offsets
  */
 function setModernOffsets(node, offsets) {
-  if (!window.getSelection) {
+  var doc = node.ownerDocument || document;
+
+  if (!doc.defaultView.getSelection) {
     return;
   }
 
-  var selection = window.getSelection();
+  var selection = doc.defaultView.getSelection();
   var length = node[getTextContentAccessor()].length;
   var start = Math.min(offsets.start, length);
   var end = offsets.end === undefined ? start : Math.min(offsets.end, length);
@@ -183,7 +189,7 @@ function setModernOffsets(node, offsets) {
     ) {
       return;
     }
-    var range = document.createRange();
+    var range = doc.createRange();
     range.setStart(startMarker.node, startMarker.offset);
     selection.removeAllRanges();
 
diff --git a/packages/react-dom/src/client/ReactInputSelection.js b/packages/react-dom/src/client/ReactInputSelection.js
deleted file mode 100644
index 605f7ac7684..00000000000
--- a/packages/react-dom/src/client/ReactInputSelection.js
+++ /dev/null
@@ -1,130 +0,0 @@
-/**
- * Copyright (c) 2013-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use strict';
-
-var containsNode = require('fbjs/lib/containsNode');
-var focusNode = require('fbjs/lib/focusNode');
-var getActiveElement = require('fbjs/lib/getActiveElement');
-
-var ReactDOMSelection = require('./ReactDOMSelection');
-var {ELEMENT_NODE} = require('../shared/HTMLNodeType');
-
-function isInDocument(node) {
-  return containsNode(document.documentElement, node);
-}
-
-/**
- * @ReactInputSelection: React input selection module. Based on Selection.js,
- * but modified to be suitable for react and has a couple of bug fixes (doesn't
- * assume buttons have range selections allowed).
- * Input selection module for React.
- */
-var ReactInputSelection = {
-  hasSelectionCapabilities: function(elem) {
-    var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase();
-    return (
-      nodeName &&
-      ((nodeName === 'input' && elem.type === 'text') ||
-        nodeName === 'textarea' ||
-        elem.contentEditable === 'true')
-    );
-  },
-
-  getSelectionInformation: function() {
-    var focusedElem = getActiveElement();
-    return {
-      focusedElem: focusedElem,
-      selectionRange: ReactInputSelection.hasSelectionCapabilities(focusedElem)
-        ? ReactInputSelection.getSelection(focusedElem)
-        : null,
-    };
-  },
-
-  /**
-   * @restoreSelection: If any selection information was potentially lost,
-   * restore it. This is useful when performing operations that could remove dom
-   * nodes and place them back in, resulting in focus being lost.
-   */
-  restoreSelection: function(priorSelectionInformation) {
-    var curFocusedElem = getActiveElement();
-    var priorFocusedElem = priorSelectionInformation.focusedElem;
-    var priorSelectionRange = priorSelectionInformation.selectionRange;
-    if (curFocusedElem !== priorFocusedElem && isInDocument(priorFocusedElem)) {
-      if (ReactInputSelection.hasSelectionCapabilities(priorFocusedElem)) {
-        ReactInputSelection.setSelection(priorFocusedElem, priorSelectionRange);
-      }
-
-      // Focusing a node can change the scroll position, which is undesirable
-      const ancestors = [];
-      let ancestor = priorFocusedElem;
-      while ((ancestor = ancestor.parentNode)) {
-        if (ancestor.nodeType === ELEMENT_NODE) {
-          ancestors.push({
-            element: ancestor,
-            left: ancestor.scrollLeft,
-            top: ancestor.scrollTop,
-          });
-        }
-      }
-
-      focusNode(priorFocusedElem);
-
-      for (let i = 0; i < ancestors.length; i++) {
-        const info = ancestors[i];
-        info.element.scrollLeft = info.left;
-        info.element.scrollTop = info.top;
-      }
-    }
-  },
-
-  /**
-   * @getSelection: Gets the selection bounds of a focused textarea, input or
-   * contentEditable node.
-   * -@input: Look up selection bounds of this input
-   * -@return {start: selectionStart, end: selectionEnd}
-   */
-  getSelection: function(input) {
-    var selection;
-
-    if ('selectionStart' in input) {
-      // Modern browser with input or textarea.
-      selection = {
-        start: input.selectionStart,
-        end: input.selectionEnd,
-      };
-    } else {
-      // Content editable or old IE textarea.
-      selection = ReactDOMSelection.getOffsets(input);
-    }
-
-    return selection || {start: 0, end: 0};
-  },
-
-  /**
-   * @setSelection: Sets the selection bounds of a textarea or input and focuses
-   * the input.
-   * -@input     Set selection bounds of this input or textarea
-   * -@offsets   Object of same form that is returned from get*
-   */
-  setSelection: function(input, offsets) {
-    var start = offsets.start;
-    var end = offsets.end;
-    if (end === undefined) {
-      end = start;
-    }
-
-    if ('selectionStart' in input) {
-      input.selectionStart = start;
-      input.selectionEnd = Math.min(end, input.value.length);
-    } else {
-      ReactDOMSelection.setOffsets(input, offsets);
-    }
-  },
-};
-
-module.exports = ReactInputSelection;
diff --git a/packages/react-dom/src/events/SelectEventPlugin.js b/packages/react-dom/src/events/SelectEventPlugin.js
index d3023ae8b04..ab841b53358 100644
--- a/packages/react-dom/src/events/SelectEventPlugin.js
+++ b/packages/react-dom/src/events/SelectEventPlugin.js
@@ -16,7 +16,6 @@ var shallowEqual = require('fbjs/lib/shallowEqual');
 
 var ReactBrowserEventEmitter = require('./ReactBrowserEventEmitter');
 var ReactDOMComponentTree = require('../client/ReactDOMComponentTree');
-var ReactInputSelection = require('../client/ReactInputSelection');
 var {DOCUMENT_NODE} = require('../shared/HTMLNodeType');
 
 var skipSelectionChangeEvent =
@@ -53,6 +52,22 @@ var mouseDown = false;
 var isListeningToAllDependencies =
   ReactBrowserEventEmitter.isListeningToAllDependencies;
 
+/**
+ * Determine if a node can have a selection associated with it.
+ *
+ * @param {DOMElement} node
+ * @return {boolean} True if the node can have a selection.
+ */
+function hasSelectionCapabilities(node) {
+  var nodeName = node && node.nodeName && node.nodeName.toLowerCase();
+  return (
+    nodeName &&
+    ((nodeName === 'input' && node.type === 'text') ||
+      nodeName === 'textarea' ||
+      node.contentEditable === 'true')
+  );
+}
+
 /**
  * Get an object which is a unique representation of the current selection.
  *
@@ -63,22 +78,25 @@ var isListeningToAllDependencies =
  * @return {object}
  */
 function getSelection(node) {
-  if (
-    'selectionStart' in node &&
-    ReactInputSelection.hasSelectionCapabilities(node)
-  ) {
+  if ('selectionStart' in node && hasSelectionCapabilities(node)) {
     return {
       start: node.selectionStart,
       end: node.selectionEnd,
     };
-  } else if (window.getSelection) {
-    var selection = window.getSelection();
-    return {
-      anchorNode: selection.anchorNode,
-      anchorOffset: selection.anchorOffset,
-      focusNode: selection.focusNode,
-      focusOffset: selection.focusOffset,
-    };
+  } else {
+    var win = window;
+    if (node.ownerDocument && node.ownerDocument.defaultView) {
+      win = node.ownerDocument.defaultView;
+    }
+    if (win.getSelection) {
+      var selection = win.getSelection();
+      return {
+        anchorNode: selection.anchorNode,
+        anchorOffset: selection.anchorOffset,
+        focusNode: selection.focusNode,
+        focusOffset: selection.focusOffset,
+      };
+    }
   }
 }
 
@@ -86,6 +104,7 @@ function getSelection(node) {
  * Poll selection to see whether it's changed.
  *
  * @param {object} nativeEvent
+ * @param {object} nativeEventTarget
  * @return {?SyntheticEvent}
  */
 function constructSelectEvent(nativeEvent, nativeEventTarget) {
@@ -93,10 +112,15 @@ function constructSelectEvent(nativeEvent, nativeEventTarget) {
   // selection (this matches native `select` event behavior). In HTML5, select
   // fires only on input and textarea thus if there's no focused element we
   // won't dispatch.
+  var doc =
+    nativeEventTarget.ownerDocument ||
+    nativeEventTarget.document ||
+    nativeEventTarget;
+
   if (
     mouseDown ||
     activeElement == null ||
-    activeElement !== getActiveElement()
+    activeElement !== getActiveElement(doc)
   ) {
     return null;
   }
diff --git a/packages/react-dom/src/events/SyntheticClipboardEvent.js b/packages/react-dom/src/events/SyntheticClipboardEvent.js
index d73860b6690..e33689f6e0d 100644
--- a/packages/react-dom/src/events/SyntheticClipboardEvent.js
+++ b/packages/react-dom/src/events/SyntheticClipboardEvent.js
@@ -15,9 +15,11 @@ var SyntheticEvent = require('events/SyntheticEvent');
  */
 var ClipboardEventInterface = {
   clipboardData: function(event) {
-    return 'clipboardData' in event
-      ? event.clipboardData
-      : window.clipboardData;
+    if ('clipboardData' in event) {
+      return event.clipboardData;
+    }
+    var doc = (event.target && event.target.ownerDocument) || document;
+    return doc.defaultView.clipboardData;
   },
 };
 
diff --git a/scripts/rollup/results.json b/scripts/rollup/results.json
index 683a2d68ee5..bf1353c2453 100644
--- a/scripts/rollup/results.json
+++ b/scripts/rollup/results.json
@@ -1,180 +1,180 @@
 {
   "bundleSizes": {
     "react.development.js (UMD_DEV)": {
-      "size": 54533,
-      "gzip": 14280
+      "size": 56844,
+      "gzip": 14860
     },
     "react.production.min.js (UMD_PROD)": {
-      "size": 6630,
-      "gzip": 2763
+      "size": 6741,
+      "gzip": 2787
     },
     "react.development.js (NODE_DEV)": {
-      "size": 45437,
-      "gzip": 12025
+      "size": 47748,
+      "gzip": 12598
     },
     "react.production.min.js (NODE_PROD)": {
-      "size": 5611,
-      "gzip": 2364
+      "size": 5719,
+      "gzip": 2392
     },
     "React-dev.js (FB_DEV)": {
-      "size": 42912,
-      "gzip": 11311
+      "size": 45223,
+      "gzip": 11890
     },
     "React-prod.js (FB_PROD)": {
-      "size": 24830,
-      "gzip": 6719
+      "size": 24971,
+      "gzip": 6747
     },
     "react-dom.development.js (UMD_DEV)": {
-      "size": 628548,
-      "gzip": 144062
+      "size": 617802,
+      "gzip": 141145
     },
     "react-dom.production.min.js (UMD_PROD)": {
-      "size": 100908,
-      "gzip": 31646
+      "size": 99119,
+      "gzip": 30917
     },
     "react-dom.development.js (NODE_DEV)": {
-      "size": 590784,
-      "gzip": 135367
+      "size": 582493,
+      "gzip": 132937
     },
     "react-dom.production.min.js (NODE_PROD)": {
-      "size": 107149,
-      "gzip": 33143
+      "size": 105058,
+      "gzip": 32377
     },
     "ReactDOM-dev.js (FB_DEV)": {
-      "size": 590759,
-      "gzip": 135629
+      "size": 582453,
+      "gzip": 133194
     },
     "ReactDOM-prod.js (FB_PROD)": {
-      "size": 421333,
-      "gzip": 93558
+      "size": 411679,
+      "gzip": 90945
     },
     "react-dom-test-utils.development.js (NODE_DEV)": {
-      "size": 41553,
-      "gzip": 11076
+      "size": 41544,
+      "gzip": 11072
     },
     "react-dom-test-utils.production.min.js (NODE_PROD)": {
-      "size": 11609,
-      "gzip": 4250
+      "size": 11600,
+      "gzip": 4242
     },
     "ReactTestUtils-dev.js (FB_DEV)": {
-      "size": 41171,
-      "gzip": 11041
+      "size": 41162,
+      "gzip": 11036
     },
     "react-dom-unstable-native-dependencies.development.js (UMD_DEV)": {
-      "size": 84862,
-      "gzip": 21152
+      "size": 84853,
+      "gzip": 21148
     },
     "react-dom-unstable-native-dependencies.production.min.js (UMD_PROD)": {
       "size": 14441,
       "gzip": 4652
     },
     "react-dom-unstable-native-dependencies.development.js (NODE_DEV)": {
-      "size": 80643,
-      "gzip": 19924
+      "size": 80634,
+      "gzip": 19920
     },
     "react-dom-unstable-native-dependencies.production.min.js (NODE_PROD)": {
       "size": 14002,
       "gzip": 4509
     },
     "ReactDOMUnstableNativeDependencies-dev.js (FB_DEV)": {
-      "size": 80136,
-      "gzip": 19870
+      "size": 80127,
+      "gzip": 19865
     },
     "ReactDOMUnstableNativeDependencies-prod.js (FB_PROD)": {
-      "size": 65144,
-      "gzip": 15547
+      "size": 65135,
+      "gzip": 15542
     },
     "react-dom-server.browser.development.js (UMD_DEV)": {
-      "size": 124541,
-      "gzip": 32144
+      "size": 126953,
+      "gzip": 32659
     },
     "react-dom-server.browser.production.min.js (UMD_PROD)": {
-      "size": 15337,
-      "gzip": 5975
+      "size": 15612,
+      "gzip": 6067
     },
     "react-dom-server.browser.development.js (NODE_DEV)": {
-      "size": 94428,
-      "gzip": 24913
+      "size": 96840,
+      "gzip": 25434
     },
     "react-dom-server.browser.production.min.js (NODE_PROD)": {
-      "size": 15066,
-      "gzip": 5893
+      "size": 15340,
+      "gzip": 5985
     },
     "ReactDOMServer-dev.js (FB_DEV)": {
-      "size": 93904,
-      "gzip": 24858
+      "size": 96316,
+      "gzip": 25374
     },
     "ReactDOMServer-prod.js (FB_PROD)": {
-      "size": 42609,
-      "gzip": 11796
+      "size": 43775,
+      "gzip": 12037
     },
     "react-dom-server.node.development.js (NODE_DEV)": {
-      "size": 96701,
-      "gzip": 25447
+      "size": 99113,
+      "gzip": 25973
     },
     "react-dom-server.node.production.min.js (NODE_PROD)": {
-      "size": 15991,
-      "gzip": 6227
+      "size": 16264,
+      "gzip": 6314
     },
     "react-art.development.js (UMD_DEV)": {
-      "size": 374492,
-      "gzip": 82196
+      "size": 375095,
+      "gzip": 82388
     },
     "react-art.production.min.js (UMD_PROD)": {
-      "size": 82762,
-      "gzip": 25785
+      "size": 83657,
+      "gzip": 25972
     },
     "react-art.development.js (NODE_DEV)": {
-      "size": 300260,
-      "gzip": 63352
+      "size": 300861,
+      "gzip": 63574
     },
     "react-art.production.min.js (NODE_PROD)": {
-      "size": 54391,
-      "gzip": 17050
+      "size": 54705,
+      "gzip": 17077
     },
     "ReactART-dev.js (FB_DEV)": {
-      "size": 298866,
-      "gzip": 63281
+      "size": 299452,
+      "gzip": 63502
     },
     "ReactART-prod.js (FB_PROD)": {
-      "size": 223988,
-      "gzip": 45978
+      "size": 223934,
+      "gzip": 46096
     },
     "ReactNativeRenderer-dev.js (RN_DEV)": {
-      "size": 286160,
-      "gzip": 49086
+      "size": 288170,
+      "gzip": 49500
     },
     "ReactNativeRenderer-prod.js (RN_PROD)": {
-      "size": 223851,
-      "gzip": 38395
+      "size": 224870,
+      "gzip": 38551
     },
     "ReactRTRenderer-dev.js (RN_DEV)": {
-      "size": 218007,
-      "gzip": 36780
+      "size": 219175,
+      "gzip": 37043
     },
     "ReactRTRenderer-prod.js (RN_PROD)": {
-      "size": 165490,
-      "gzip": 27606
+      "size": 165741,
+      "gzip": 27631
     },
     "ReactCSRenderer-dev.js (RN_DEV)": {
-      "size": 210392,
-      "gzip": 35120
+      "size": 205708,
+      "gzip": 34449
     },
     "ReactCSRenderer-prod.js (RN_PROD)": {
-      "size": 160483,
-      "gzip": 26404
+      "size": 153897,
+      "gzip": 25229
     },
     "react-test-renderer.development.js (NODE_DEV)": {
-      "size": 304118,
-      "gzip": 63787
+      "size": 304719,
+      "gzip": 64011
     },
     "react-test-renderer.production.min.js (NODE_PROD)": {
-      "size": 55985,
-      "gzip": 17315
+      "size": 56299,
+      "gzip": 17412
     },
     "ReactTestRenderer-dev.js (FB_DEV)": {
-      "size": 302714,
-      "gzip": 63724
+      "size": 303300,
+      "gzip": 63950
     },
     "react-test-renderer-shallow.development.js (NODE_DEV)": {
       "size": 9246,
@@ -189,24 +189,24 @@
       "gzip": 2250
     },
     "react-noop-renderer.development.js (NODE_DEV)": {
-      "size": 293399,
-      "gzip": 61042
+      "size": 294053,
+      "gzip": 61271
     },
     "react-reconciler.development.js (NODE_DEV)": {
-      "size": 278999,
-      "gzip": 57818
+      "size": 279600,
+      "gzip": 58027
     },
     "react-reconciler.production.min.js (NODE_PROD)": {
-      "size": 38245,
-      "gzip": 11943
+      "size": 39145,
+      "gzip": 12160
     },
     "react-call-return.development.js (NODE_DEV)": {
-      "size": 2721,
-      "gzip": 943
+      "size": 2700,
+      "gzip": 937
     },
     "react-call-return.production.min.js (NODE_PROD)": {
       "size": 845,
       "gzip": 484
     }
   }
-}
+}
\ No newline at end of file