Remove temporary code in FullscreenController and WebWidgetClient.

Source/web/tests/WebFrameTest.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 671 matching lines @@
 }
 
 class FixedLayoutTestWebViewClient : public FrameTestHelpers::TestWebViewClient {
  public:
     virtual WebScreenInfo screenInfo() override { return m_screenInfo; }
 
     WebScreenInfo m_screenInfo;
 };
 
 class FakeCompositingWebViewClient : public FixedLayoutTestWebViewClient {
-public:
-    virtual bool enterFullScreen() override { return true; }
 };
 
 // Viewport settings need to be set before the page gets loaded
 static void enableViewportSettings(WebSettings* settings)
 {
     settings->setViewportMetaEnabled(true);
     settings->setViewportEnabled(true);
     settings->setMainFrameResizesAreOrientationChanges(true);
     settings->setShrinksViewportContentToFit(true);
 }
@@ skipping 6220 matching lines @@
     EXPECT_EQ(1u, frameClient.navigationalDataReceivedCount());
 
     // Neither should a page reload.
     localFrame->reload();
     EXPECT_EQ(4u, frameClient.provisionalLoadCount());
     EXPECT_FALSE(frameClient.wasLastProvisionalLoadATransition());
     EXPECT_EQ(1u, frameClient.navigationalDataReceivedCount());
 }
 
 } // namespace