[NOT FOR COMMIT] Fully replace SkCanvas uses.

ui/surface/transport_dib.h

Index: ui/surface/transport_dib.h
diff --git a/ui/surface/transport_dib.h b/ui/surface/transport_dib.h
index 3217b5ff8a663927af793dd61c5ab02c6f157c86..8b9bab2a7e74bdf974b66a2d3f34946bbed9781b 100644
--- a/ui/surface/transport_dib.h
+++ b/ui/surface/transport_dib.h
@@ -11,6 +11,7 @@
 #include "base/macros.h"
 #include "base/memory/shared_memory.h"
 #include "build/build_config.h"
+#include "skia/ext/cdl_common.h"
 #include "ui/surface/surface_export.h"
 
 #if defined(OS_WIN)
@@ -19,8 +20,6 @@
 
 #include <memory>
 
-class SkCanvas;
-
 // -----------------------------------------------------------------------------
 // A TransportDIB is a block of memory that is used to transport pixels
 // between processes: from the renderer process to the browser, and
@@ -73,7 +72,7 @@ class SURFACE_EXPORT TransportDIB {
   //
   // Will return NULL on allocation failure. This could be because the image
   // is too large to map into the current process' address space.
-  std::unique_ptr<SkCanvas> GetPlatformCanvas(int w, int h, bool opaque);
+  std::unique_ptr<CdlCanvas> GetPlatformCanvas(int w, int h, bool opaque);
 
   // Map the DIB into the current process if it is not already. This is used to
   // map a DIB that has already been created. Returns true if the DIB is mapped.