Remove obsolete Gecko specific goog.net.xpc.FrameElementMethodTransport and associated code.

RELNOTES[INC]: Obsolete goog.net.xpc.FrameElementMethodTransport has been removed.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=264159674

Author: concavelenz

closure/goog/deps.js

@@ -40,7 +40,6 @@ goog.require('goog.net.xpc.CfgFields');
 goog.require('goog.net.xpc.ChannelStates');
 goog.require('goog.net.xpc.CrossPageChannelRole');
 goog.require('goog.net.xpc.DirectTransport');
-goog.require('goog.net.xpc.FrameElementMethodTransport');
 goog.require('goog.net.xpc.IframeRelayTransport');
 goog.require('goog.net.xpc.NativeMessagingTransport');
 goog.require('goog.net.xpc.TransportTypes');
@@ -298,8 +297,6 @@ goog.net.xpc.CrossPageChannel.prototype.determineTransportType_ = function() {
       // typeof window.postMessage returns "object"
       (goog.userAgent.IE && window.postMessage)) {
     transportType = goog.net.xpc.TransportTypes.NATIVE_MESSAGING;
-  } else if (goog.userAgent.GECKO) {
-    transportType = goog.net.xpc.TransportTypes.FRAME_ELEMENT_METHOD;
   } else if (
       goog.userAgent.IE && this.cfg_[goog.net.xpc.CfgFields.PEER_RELAY_URI]) {
     transportType = goog.net.xpc.TransportTypes.IFRAME_RELAY;
@@ -343,10 +340,6 @@ goog.net.xpc.CrossPageChannel.prototype.createTransport_ = function() {
             this, this.cfg_[CfgFields.PEER_HOSTNAME], this.domHelper_,
             !!this.cfg_[CfgFields.ONE_SIDED_HANDSHAKE], protocolVersion);
         break;
-      case goog.net.xpc.TransportTypes.FRAME_ELEMENT_METHOD:
-        this.transport_ =
-            new goog.net.xpc.FrameElementMethodTransport(this, this.domHelper_);
-        break;
       case goog.net.xpc.TransportTypes.IFRAME_RELAY:
         this.transport_ =
             new goog.net.xpc.IframeRelayTransport(this, this.domHelper_);

closure/goog/net/xpc/crosspagechannel.js

@@ -50,10 +50,9 @@ goog.require('goog.log');
 goog.net.xpc.TransportTypes = {
   UNDEFINED: 0,
   NATIVE_MESSAGING: 1,
-  FRAME_ELEMENT_METHOD: 2,
-  IFRAME_RELAY: 3,
-  IFRAME_POLLING: 4,
-  DIRECT: 5
+  IFRAME_RELAY: 2,
+  IFRAME_POLLING: 3,
+  DIRECT: 4
 };
 
 
@@ -64,10 +63,9 @@ goog.net.xpc.TransportTypes = {
  */
 goog.net.xpc.TransportNames = {
   '1': 'NativeMessagingTransport',
-  '2': 'FrameElementMethodTransport',
-  '3': 'IframeRelayTransport',
-  '4': 'IframePollingTransport',
-  '5': 'DirectTransport'
+  '2': 'IframeRelayTransport',
+  '3': 'IframePollingTransport',
+  '4': 'DirectTransport'
 };