Add new FrameTest.* unit tests and fix discovered CefFrame-related bugs.

- Allow empty |name| argument to CefBrowser::GetFrame. This will return the main frame.
- Modify CefBrowser::GetFrame to search both assigned and unique frame names.
- Calling CefFrame::IsFocused on the main frame should return true when there are no other frames.
- Fix CefBrowser::GetFrameIdentifiers and GetFrameNames to return correct values in the renderer process (issue #1236).
- Delete NavigationTest.FrameNameIdent which is now obsoleted by the new FrameTests.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1842 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

include/cef_browser.h

@@ -159,7 +159,7 @@ class CefBrowser : public virtual CefBase {
   ///
   // Returns the frame with the specified name, or NULL if not found.
   ///
-  /*--cef()--*/
+  /*--cef(optional_param=name)--*/
   virtual CefRefPtr<CefFrame> GetFrame(const CefString& name) =0;
 
   ///