[NOT FOR COMMIT] Fully replace SkCanvas uses.

cc/blimp/engine_picture_cache.h

Index: cc/blimp/engine_picture_cache.h
diff --git a/cc/blimp/engine_picture_cache.h b/cc/blimp/engine_picture_cache.h
index d198b32ad7b7636536c88da708f53a3cc645625c..f21ea919f986c21e25e050c04509b03a1669a36d 100644
--- a/cc/blimp/engine_picture_cache.h
+++ b/cc/blimp/engine_picture_cache.h
@@ -7,7 +7,7 @@
 
 #include <vector>
 
-class SkPicture;
+#include "skia/ext/cdl_common.h"
 
 namespace cc {
 struct PictureData;
@@ -21,7 +21,7 @@ class EnginePictureCache {
   virtual ~EnginePictureCache() {}
 
   // MarkUsed must be called when an SkPicture needs to available on the client.
-  virtual void MarkUsed(const SkPicture* picture) = 0;
+  virtual void MarkUsed(const CdlPicture* picture) = 0;
 
   // Called when a PictureCacheUpdate is going to be sent to the client. This
   // must contain all the new SkPictures that are in use since last call.