Use a direct include of strings headers in remoting/.

remoting/client/plugin/pepper_view.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 "remoting/client/plugin/pepper_view.h"
 
 #include <functional>
 
 #include "base/message_loop.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
+#include "base/synchronization/waitable_event.h"
 #include "base/time.h"
-#include "base/synchronization/waitable_event.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/dev/graphics_2d_dev.h"
 #include "ppapi/cpp/dev/view_dev.h"
 #include "ppapi/cpp/image_data.h"
 #include "ppapi/cpp/point.h"
 #include "ppapi/cpp/rect.h"
 #include "ppapi/cpp/size.h"
 #include "remoting/base/util.h"
 #include "remoting/client/chromoting_stats.h"
 #include "remoting/client/client_context.h"
@@ skipping 271 matching lines @@
 
   // If there is a buffer queued for rendering then render it now.
   if (merge_buffer_ != NULL) {
     buffer = merge_buffer_;
     merge_buffer_ = NULL;
     FlushBuffer(merge_clip_area_, buffer, merge_region_);
   }
 }
 
 }  // namespace remoting