Convert string16 to base::string16 in content.

content/browser/web_contents/web_contents_view_guest.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 "content/browser/web_contents/web_contents_view_guest.h"
 
 #include "build/build_config.h"
 #include "content/browser/browser_plugin/browser_plugin_embedder.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
@@ skipping 124 matching lines @@
       platform_widget);
 
   return view;
 }
 
 RenderWidgetHostView* WebContentsViewGuest::CreateViewForPopupWidget(
     RenderWidgetHost* render_widget_host) {
   return RenderWidgetHostViewPort::CreateViewForWidget(render_widget_host);
 }
 
-void WebContentsViewGuest::SetPageTitle(const string16& title) {
+void WebContentsViewGuest::SetPageTitle(const base::string16& title) {
 }
 
 void WebContentsViewGuest::RenderViewCreated(RenderViewHost* host) {
   platform_view_->RenderViewCreated(host);
 }
 
 void WebContentsViewGuest::RenderViewSwappedIn(RenderViewHost* host) {
   platform_view_->RenderViewSwappedIn(host);
 }
 
@@ skipping 100 matching lines @@
   CHECK(embedder_render_view_host);
   RenderViewHostDelegateView* view =
       embedder_render_view_host->GetDelegate()->GetDelegateView();
   if (view)
     view->StartDragging(drop_data, ops, image, image_offset, event_info);
   else
     embedder_web_contents->SystemDragEnded();
 }
 
 }  // namespace content