fix (element): Allow ElementFinder to be passed to actions directly.

Previously, do to an action such as drag and drop, one would have to use
`element(by.foo).find()`. Now, just passing `element(by.foo)` works. For example:

```javascript
browser.actions().doubleClick(element(by.id('mybutton'))).perform();
```

lib/protractor.js

@@ -11,7 +11,7 @@ var DEFER_LABEL = 'NG_DEFER_BOOTSTRAP!';
 var WEB_ELEMENT_FUNCTIONS = [
   'click', 'sendKeys', 'getTagName', 'getCssValue', 'getAttribute', 'getText',
   'getSize', 'getLocation', 'isEnabled', 'isSelected', 'submit', 'clear',
-  'isDisplayed', 'getOuterHtml', 'getInnerHtml'];
+  'isDisplayed', 'getOuterHtml', 'getInnerHtml', 'toWireValue'];
 
 var STACK_SUBSTRINGS_TO_FILTER = [
   'node_modules/minijasminenode/lib/',

spec/basic/actions_spec.js

@@ -9,7 +9,7 @@ describe('using an ActionSequence', function() {
     expect(sliderBar.getAttribute('value')).toEqual('1');
 
     browser.actions().
-        dragAndDrop(sliderBar.find(), {x: 400, y: 20}).
+        dragAndDrop(sliderBar, {x: 400, y: 20}).
         perform();
 
     expect(sliderBar.getAttribute('value')).toEqual('10');