Change how ui::Clipboard is accessed so there's only one per thread.

ui/views/test/test_views_delegate.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_TEST_TEST_VIEWS_DELEGATE_H_
 #define UI_VIEWS_TEST_TEST_VIEWS_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 10 matching lines @@
 class Widget;
 
 class TestViewsDelegate : public ViewsDelegate {
  public:
   TestViewsDelegate();
   virtual ~TestViewsDelegate();
 
   void SetUseTransparentWindows(bool transparent);
 
   // Overridden from ViewsDelegate:
-  virtual ui::Clipboard* GetClipboard() const OVERRIDE;
   virtual void SaveWindowPlacement(const Widget* window,
                                    const std::string& window_name,
                                    const gfx::Rect& bounds,
                                    ui::WindowShowState show_state) OVERRIDE;
   virtual bool GetSavedWindowPlacement(
       const std::string& window_name,
       gfx::Rect* bounds,
       ui::WindowShowState* show_state) const OVERRIDE;
 
   virtual void NotifyAccessibilityEvent(
@@ skipping 20 matching lines @@
 #if defined(USE_AURA)
   virtual views::NativeWidgetHelperAura* CreateNativeWidgetHelper(
       views::NativeWidgetAura* native_widget) OVERRIDE;
 #endif
 
   virtual content::WebContents* CreateWebContents(
       content::BrowserContext* browser_context,
       content::SiteInstance* site_instance) OVERRIDE;
 
  private:
-  mutable scoped_ptr<ui::Clipboard> clipboard_;
   bool use_transparent_windows_;
 
   DISALLOW_COPY_AND_ASSIGN(TestViewsDelegate);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_TEST_TEST_VIEWS_DELEGATE_H_