chrome: Update the include paths of base/string_piece.h to its new location.

chrome/browser/sync/glue/typed_url_model_associator_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 "base/basictypes.h"
 #include "base/bind.h"
-#include "base/string_piece.h"
+#include "base/strings/string_piece.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/test_timeouts.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/sync/glue/typed_url_model_associator.h"
 #include "chrome/browser/sync/profile_sync_service_mock.h"
 #include "content/public/test/test_browser_thread.h"
 #include "googleurl/src/gurl.h"
 #include "sync/protocol/typed_url_specifics.pb.h"
@@ skipping 419 matching lines @@
   BrowserThread::PostTask(BrowserThread::DB, FROM_HERE, callback);
   // Wait for the model associator to get created and start assocation.
   ASSERT_TRUE(startup.TimedWait(TestTimeouts::action_timeout()));
   // Abort the model assocation - this should be callable from any thread.
   associator->AbortAssociation();
   // Tell the remote thread to continue.
   aborted.Signal();
   // Block until CreateModelAssociator() exits.
   ASSERT_TRUE(done.TimedWait(TestTimeouts::action_timeout()));
 }