Add unit tests for ui::WebView embedded fullscreen mode.

ui/views/controls/webview/webview.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
 #define UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/web_contents_delegate.h"
@@ skipping 112 matching lines @@
   void DidToggleFullscreenModeForTab(bool entered_fullscreen) override;
   void DidAttachInterstitialPage() override;
   void DidDetachInterstitialPage() override;
   // Workaround for MSVC++ linker bug/feature that requires
   // instantiation of the inline IPC::Listener methods in all translation units.
   void OnChannelConnected(int32 peer_id) override {}
   void OnChannelError() override {}
   void OnBadMessageReceived(const IPC::Message& message) override {}
 
  private:
+  friend class WebViewUnitTest;
+
   void AttachWebContents();
   void DetachWebContents();
   void ReattachForFullscreenChange(bool enter_fullscreen);
   void NotifyMaybeTextInputClientChanged();
 
   // Create a regular or test web contents (based on whether we're running
   // in a unit test or not).
   content::WebContents* CreateWebContents(
       content::BrowserContext* browser_context);
 
   NativeViewHost* const holder_;
   // Non-NULL if |web_contents()| was created and is owned by this WebView.
   scoped_ptr<content::WebContents> wc_owner_;
   // When true, WebView auto-embeds fullscreen widgets as a child view.
   bool embed_fullscreen_widget_mode_enabled_;
   // Set to true while WebView is embedding a fullscreen widget view as a child
   // view instead of the normal WebContentsView render view. Note: This will be
   // false in the case of non-Flash fullscreen.
   bool is_embedding_fullscreen_widget_;
   content::BrowserContext* browser_context_;
   bool allow_accelerators_;
   gfx::Size preferred_size_;
 
   DISALLOW_COPY_AND_ASSIGN(WebView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_