cc: Refactor ResourceProvider.

cc/resources/image_copy_raster_worker_pool.cc

Index: cc/resources/image_copy_raster_worker_pool.cc
diff --git a/cc/resources/image_copy_raster_worker_pool.cc b/cc/resources/image_copy_raster_worker_pool.cc
index 0d4f7441e5222be3b78646df74e05dd6e98dbbae..ea5fd29a0fb62ef74c61d7d0a13efdac05d2c5f1 100644
--- a/cc/resources/image_copy_raster_worker_pool.cc
+++ b/cc/resources/image_copy_raster_worker_pool.cc
@@ -10,6 +10,9 @@
 #include "cc/debug/traced_value.h"
 #include "cc/resources/resource_pool.h"
 #include "cc/resources/scoped_resource.h"
+#include "gpu/command_buffer/client/gles2_interface.h"
+
+using gpu::gles2::GLES2Interface;
 
 namespace cc {
 
@@ -226,7 +229,10 @@ void ImageCopyRasterWorkerPool::FlushCopies() {
   if (!has_performed_copy_since_last_flush_)
     return;
 
-  resource_provider_->ShallowFlushIfSupported();
+  GLES2Interface* gl = resource_provider_->ContextGL();
+  if (gl)
+    gl->ShallowFlushCHROMIUM();
+
   has_performed_copy_since_last_flush_ = false;
 }