Fix Flash fullscreen focus regressions, and add interactive_ui_tests.

content/browser/web_contents/web_contents_view_mac.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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MAC_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include <string>
@@ skipping 104 matching lines @@
   void TakeFocus(bool reverse) override;
 
   // A helper method for closing the tab in the
   // CloseTabAfterEventTracking() implementation.
   void CloseTab();
 
   WebContentsImpl* web_contents() { return web_contents_; }
   WebContentsViewDelegate* delegate() { return delegate_.get(); }
 
  private:
+  // Returns the fullscreen view, if one exists; otherwise, returns the content
+  // native view. This ensures that the view currently attached to a NSWindow is
+  // being used to query or set first responder state.
+  gfx::NativeView GetNativeViewForFocus() const;
+
   // The WebContentsImpl whose contents we display.
   WebContentsImpl* web_contents_;
 
   // The Cocoa NSView that lives in the view hierarchy.
   base::scoped_nsobject<WebContentsViewCocoa> cocoa_view_;
 
   // Keeps track of which NSView has focus so we can restore the focus when
   // focus returns.
   base::scoped_nsobject<FocusTracker> focus_tracker_;
 
   // Our optional delegate.
   scoped_ptr<WebContentsViewDelegate> delegate_;
 
   // Whether to allow other views.
   bool allow_other_views_;
 
   scoped_ptr<PopupMenuHelper> popup_menu_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsViewMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MAC_H_