renderer_host: Remove CanBlur method.

chrome/browser/tab_contents/tab_contents_delegate.h

 // Copyright (c) 2010 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 CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 109 matching lines @@
   virtual void OnContentSettingsChange(TabContents* source) { }
 
   // Check whether this contents is inside a window dedicated to running a web
   // application.
   virtual bool IsApplication() const { return false; }
 
   // Detach the given tab and convert it to a "webapp" view.  The tab must be
   // a TabContents with a valid WebApp set.
   virtual void ConvertContentsToApplication(TabContents* source) { }
 
-  // Whether this tab can be blurred through a javascript obj.blur()
-  // call. ConstrainedWindows shouldn't be able to be blurred.
-  virtual bool CanBlur() const { return true; }
-
   // Whether the specified tab can be reloaded.
   // Reloading can be disabled e. g. for the DevTools window.
   virtual bool CanReloadContents(TabContents* source) const { return true; }
 
   // Return the rect where to display the resize corner, if any, otherwise
   // an empty rect.
   virtual gfx::Rect GetRootWindowResizerRect() const { return gfx::Rect(); }
 
   // Show a dialog with HTML content. |delegate| contains a pointer to the
   // delegate who knows how to display the dialog (which file URL and JSON
@@ skipping 150 matching lines @@
 
   // Notification that the preferred size of the contents has changed.
   // Only called if ShouldEnablePreferredSizeNotifications() returns true.
   virtual void UpdatePreferredSize(const gfx::Size& pref_size) {}
 
  protected:
   ~TabContentsDelegate() {}
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_