Support format using enum argument for Async readback

content/browser/renderer_host/render_widget_host_view_browsertest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
@@ skipping 717 matching lines @@
 #endif
 
       base::Callback<void(bool, const SkBitmap&)> callback =
           base::Bind(&CompositingRenderWidgetHostViewBrowserTestTabCapture::
                        CopyFromCompositingSurfaceCallback,
                    base::Unretained(this),
                    run_loop.QuitClosure());
       rwhvp->CopyFromCompositingSurface(copy_rect,
                                         output_size,
                                         callback,
-                                        false);
+                                        SkBitmap::kARGB_8888_Config);
     }
     run_loop.Run();
   }
 
   // Sets up |bitmap| to have size |copy_size|. It floods the left half with
   // #0ff and the right half with #ff0.
   void SetupLeftRightBitmap(const gfx::Size& copy_size, SkBitmap* bitmap) {
     bitmap->setConfig(
         SkBitmap::kARGB_8888_Config, copy_size.width(), copy_size.height());
     bitmap->allocPixels();
@@ skipping 198 matching lines @@
                         CompositingRenderWidgetHostViewBrowserTestTabCapture,
                         testing::ValuesIn(kAllCompositingModes));
 INSTANTIATE_TEST_CASE_P(GLAndSoftwareCompositing,
                         CompositingRenderWidgetHostViewTabCaptureHighDPI,
                         testing::ValuesIn(kAllCompositingModes));
 
 #endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
 
 }  // namespace
 }  // namespace content