Update references to Blink's Platform API headers

chrome/renderer/autofill/page_click_tracker_browsertest.cc

 // Copyright (c) 2011 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 "components/autofill/renderer/page_click_listener.h"
 #include "components/autofill/renderer/page_click_tracker.h"
 #include "content/public/renderer/render_view.h"
 #include "content/public/test/render_view_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebSize.h"
+#include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 
 namespace autofill {
 
 class TestPageClickListener : public PageClickListener {
  public:
   TestPageClickListener()
@@ skipping 126 matching lines @@
   EXPECT_TRUE(test_listener_.input_element_lost_focus_called_);
   test_listener_.ClearResults();
 
   // Click on a text field while the button has focus and ensure no lost focus
   // notification is sent.
   EXPECT_TRUE(SimulateElementClick("text_1"));
   EXPECT_FALSE(test_listener_.input_element_lost_focus_called_);
 }
 
 }  // namespace autofill