Move rendering/RenderLayer* to layout/

Source/core/html/HTMLCanvasElement.cpp

Index: Source/core/html/HTMLCanvasElement.cpp
diff --git a/Source/core/html/HTMLCanvasElement.cpp b/Source/core/html/HTMLCanvasElement.cpp
index f8d40d8c7c2cabae1e3be29cb5c1a0aa0237d5e9..5854ae4277969982724c238e14b23bad22b62e98 100644
--- a/Source/core/html/HTMLCanvasElement.cpp
+++ b/Source/core/html/HTMLCanvasElement.cpp
@@ -43,8 +43,8 @@
 #include "core/html/canvas/WebGLContextAttributes.h"
 #include "core/html/canvas/WebGLContextEvent.h"
 #include "core/html/canvas/WebGLRenderingContext.h"
+#include "core/layout/Layer.h"
 #include "core/rendering/RenderHTMLCanvas.h"
-#include "core/rendering/RenderLayer.h"
 #include "platform/MIMETypeRegistry.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/BitmapImage.h"
@@ -280,7 +280,7 @@ void HTMLCanvasElement::didFinalizeFrame()
     m_dirtyRect.intersect(srcRect);
     if (RenderBox* ro = renderBox()) {
         FloatRect mappedDirtyRect = mapRect(m_dirtyRect, srcRect, ro->contentBoxRect());
-        // For querying RenderLayer::compositingState()
+        // For querying Layer::compositingState()
         // FIXME: is this invalidation using the correct compositing state?
         DisableCompositingQueryAsserts disabler;
         ro->invalidatePaintRectangle(enclosingIntRect(mappedDirtyRect));