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

content/renderer/accessibility_node_serializer.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/renderer/accessibility_node_serializer.h"
 
 #include <set>
 
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebRect.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebSize.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebVector.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebAccessibilityObject.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebAccessibilityRole.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocumentType.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFormControlElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebRect.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSize.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
 
 using WebKit::WebAccessibilityRole;
 using WebKit::WebAccessibilityObject;
 using WebKit::WebDocument;
 using WebKit::WebDocumentType;
 using WebKit::WebElement;
 using WebKit::WebNode;
 using WebKit::WebVector;
 
 namespace content {
@@ skipping 572 matching lines @@
                                    &dst->children.back(),
                                    include_children);
       } else {
         dst->indirect_child_ids.push_back(child_id);
       }
     }
   }
 }
 
 }  // namespace content