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

chrome/test/base/testing_browser_process.cc

Index: chrome/test/base/testing_browser_process.cc
diff --git a/chrome/test/base/testing_browser_process.cc b/chrome/test/base/testing_browser_process.cc
index d8d7a8029c117fc51bf6fb124d123e274eaeb489..e1fc2426a2feddf1b09f7d8c98497c0a289c9a18 100644
--- a/chrome/test/base/testing_browser_process.cc
+++ b/chrome/test/base/testing_browser_process.cc
@@ -17,7 +17,6 @@
 #include "content/public/browser/notification_service.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "ui/base/clipboard/clipboard.h"
 
 #if !defined(ENABLE_CONFIGURATION_POLICY)
 #include "chrome/browser/policy/policy_service_stub.h"
@@ -125,14 +124,6 @@ chromeos::OomPriorityManager* TestingBrowserProcess::oom_priority_manager() {
 }
 #endif  // defined(OS_CHROMEOS)
 
-ui::Clipboard* TestingBrowserProcess::clipboard() {
-  if (!clipboard_.get()) {
-    // Note that we need a MessageLoop for the next call to work.
-    clipboard_.reset(new ui::Clipboard);
-  }
-  return clipboard_.get();
-}
-
 extensions::EventRouterForwarder*
 TestingBrowserProcess::extension_event_router_forwarder() {
   return NULL;