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

chrome/browser/ui/views/accessibility/accessibility_event_router_views_unittest.cc

 // 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.
 
 #include <string>
 
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/accessibility/accessibility_extension_api.h"
@@ skipping 18 matching lines @@
 #endif
 
 #if defined(TOOLKIT_VIEWS)
 
 class AccessibilityViewsDelegate : public views::ViewsDelegate {
  public:
   AccessibilityViewsDelegate() {}
   virtual ~AccessibilityViewsDelegate() {}
 
   // Overridden from views::ViewsDelegate:
-  virtual ui::Clipboard* GetClipboard() const OVERRIDE { return NULL; }
   virtual void SaveWindowPlacement(const views::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 {
     return false;
@@ skipping 281 matching lines @@
 
   // Test that we got the event with the expected name and context.
   EXPECT_EQ(1, focus_event_count_);
   EXPECT_EQ(kButtonNameASCII, last_control_name_);
   EXPECT_EQ(kAlertTextASCII, last_control_context_);
 
   window->CloseNow();
 }
 
 #endif  // defined(TOOLKIT_VIEWS)