Rename platform/Widget to platform/FrameViewBase in core.

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

Index: third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp
diff --git a/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp b/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp
index 9328460562c2e41ae35001f33e58dda965ee8de8..84f64b1d3bc19c228698baa43e2c857d17b93c23 100644
--- a/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp
+++ b/third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp
@@ -151,10 +151,10 @@ static bool contentLayerSupportsDirectBackgroundComposition(
 static WebLayer* platformLayerForPlugin(LayoutObject& layoutObject) {
   if (!layoutObject.isEmbeddedObject())
     return nullptr;
-  Widget* widget = toLayoutEmbeddedObject(layoutObject).widget();
-  if (!widget || !widget->isPluginView())
+  FrameViewBase* frameViewBase = toLayoutEmbeddedObject(layoutObject).widget();
+  if (!frameViewBase || !frameViewBase->isPluginView())
     return nullptr;
-  return toPluginView(widget)->platformLayer();
+  return toPluginView(frameViewBase)->platformLayer();
 }
 
 static inline bool isAcceleratedContents(LayoutObject& layoutObject) {