Update references to Blink's Platform API headers

cc/trees/layer_tree_host_unittest_scroll.cc

 // Copyright 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 "cc/trees/layer_tree_host.h"
 
 #include "base/memory/weak_ptr.h"
 #include "cc/base/thread_impl.h"
 #include "cc/layers/content_layer.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/test/fake_content_layer_client.h"
 #include "cc/test/fake_layer_tree_host_client.h"
 #include "cc/test/geometry_test_utils.h"
 #include "cc/test/layer_tree_test.h"
 #include "cc/trees/layer_tree_impl.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebLayerScrollClient.h"
+#include "third_party/WebKit/public/platform/WebLayerScrollClient.h"
 #include "ui/gfx/point_conversions.h"
 #include "ui/gfx/size_conversions.h"
 #include "ui/gfx/vector2d_conversions.h"
 
 namespace cc {
 namespace {
 
 class LayerTreeHostScrollTest : public LayerTreeTest {};
 
 class LayerTreeHostScrollTestScrollSimple : public LayerTreeHostScrollTest {
@@ skipping 720 matching lines @@
                             base::Unretained(&input_handler_client)));
 
   layer_tree_host->DidStopFlinging();
   layer_tree_host.reset();
   impl_thread.Stop();
   EXPECT_TRUE(received_stop_flinging);
 }
 
 }  // namespace
 }  // namespace cc