Register clipboard image blob in the browser process to copy data less.

components/test_runner/pixel_dump.cc

 // Copyright 2016 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 "components/test_runner/pixel_dump.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 #include "components/test_runner/layout_test_runtime_flags.h"
 // FIXME: Including platform_canvas.h here is a layering violation.
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/public/platform/Platform.h"
-#include "third_party/WebKit/public/platform/WebClipboard.h"
 #include "third_party/WebKit/public/platform/WebCompositeAndReadbackAsyncCallback.h"
-#include "third_party/WebKit/public/platform/WebData.h"
 #include "third_party/WebKit/public/platform/WebImage.h"
+#include "third_party/WebKit/public/platform/WebMockClipboard.h"
 #include "third_party/WebKit/public/platform/WebPoint.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebPagePopup.h"
 #include "third_party/WebKit/public/web/WebPrintParams.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "ui/gfx/geometry/point.h"
 
 namespace test_runner {
 
 namespace {
@@ skipping 153 matching lines @@
           blink::WebClipboard::Buffer());
   web_view->copyImageAt(blink::WebPoint(x, y));
   if (sequence_number ==
       blink::Platform::current()->clipboard()->sequenceNumber(
           blink::WebClipboard::Buffer())) {
     SkBitmap emptyBitmap;
     callback.Run(emptyBitmap);
     return;
   }
 
-  blink::WebData data = blink::Platform::current()->clipboard()->readImage(
-      blink::WebClipboard::Buffer());
-  blink::WebImage image = blink::WebImage::fromData(data, blink::WebSize());
+  blink::WebImage image = static_cast<blink::WebMockClipboard*>(
+                              blink::Platform::current()->clipboard())
+                              ->readRawImage(blink::WebClipboard::Buffer());
   const SkBitmap& bitmap = image.getSkBitmap();
   SkAutoLockPixels autoLock(bitmap);
   callback.Run(bitmap);
 }
 
 }  // namespace test_runner