cc: check valid thread and resource origin for the resource rasterized.

cc/resources/resource_provider.h

Index: cc/resources/resource_provider.h
diff --git a/cc/resources/resource_provider.h b/cc/resources/resource_provider.h
index adf32f26d75616094f0d7f994f103aec50fc9e3d..40103f6b3e336c64f48b523d342d365ae7913168 100644
--- a/cc/resources/resource_provider.h
+++ b/cc/resources/resource_provider.h
@@ -304,6 +304,7 @@ class CC_EXPORT ResourceProvider {
     ResourceProvider::Resource* resource_;
     SkBitmap sk_bitmap_;
     scoped_ptr<SkCanvas> sk_canvas_;
+    base::ThreadChecker thread_checker_;
 
     DISALLOW_COPY_AND_ASSIGN(ScopedWriteLockSoftware);
   };
@@ -323,6 +324,7 @@ class CC_EXPORT ResourceProvider {
     gfx::GpuMemoryBuffer* gpu_memory_buffer_;
     gfx::Size size_;
     ResourceFormat format_;
+    base::ThreadChecker thread_checker_;
 
     DISALLOW_COPY_AND_ASSIGN(ScopedWriteLockGpuMemoryBuffer);
   };
@@ -338,6 +340,7 @@ class CC_EXPORT ResourceProvider {
    private:
     ResourceProvider* resource_provider_;
     ResourceProvider::Resource* resource_;
+    base::ThreadChecker thread_checker_;
 
     DISALLOW_COPY_AND_ASSIGN(ScopedWriteLockGr);
   };