cc: Remove the temporary header files that aren't prefixed with CC*

cc/content_layer.h

Index: cc/content_layer.h
diff --git a/cc/content_layer.h b/cc/content_layer.h
index add4b66464f1577c1e9cca470eff643480bfc079..85c91c42888b600f5215c6141ad4593ec4012185 100644
--- a/cc/content_layer.h
+++ b/cc/content_layer.h
@@ -2,13 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-
 #ifndef ContentLayerChromium_h
 #define ContentLayerChromium_h
 
 #include "base/basictypes.h"
-#include "LayerPainterChromium.h"
-#include "TiledLayerChromium.h"
+#include "cc/layer_painter.h"
+#include "cc/tiled_layer.h"
 
 class SkCanvas;