Update some #includes in content/renderer for headers in the new Platform directory

content/renderer/disambiguation_popup_helper.h

 // 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.
 
 #ifndef CONTENT_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_
 #define CONTENT_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_
 
 #include "content/common/content_export.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebVector.h"
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace WebKit {
 struct WebRect;
 }
 
 namespace content {
 
 // Contains functions to calculate proper scaling factor and popup size
 class DisambiguationPopupHelper {
  public:
   CONTENT_EXPORT static float ComputeZoomAreaAndScaleFactor(
       const gfx::Rect& tap_rect,
       const WebKit::WebVector<WebKit::WebRect>& target_rects,
       const gfx::Size& viewport_size,
       gfx::Rect* zoom_rect);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_DISAMBIGUATION_POPUP_HELPER_H_