Use per-frame WebTaskRunner in HTMLCanvasElement

third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 332 matching lines @@
   m_numFramesSinceLastRenderingModeSwitch++;
   if (RuntimeEnabledFeatures::
           enableCanvas2dDynamicRenderingModeSwitchingEnabled() &&
       !RuntimeEnabledFeatures::canvas2dFixedRenderingModeEnabled()) {
     if (m_context->is2d() && buffer() && buffer()->isAccelerated() &&
         m_numFramesSinceLastRenderingModeSwitch >=
             ExpensiveCanvasHeuristicParameters::MinFramesBeforeSwitch &&
         !m_pendingRenderingModeSwitch) {
       if (!m_context->isAccelerationOptimalForCanvasContent()) {
         // The switch must be done asynchronously in order to avoid switching during the paint invalidation step.
-        Platform::current()->currentThread()->getWebTaskRunner()->postTask(
-            BLINK_FROM_HERE,
-            WTF::bind(
-                [](WeakPtr<ImageBuffer> buffer) {
-                  if (buffer) {
-                    buffer->disableAcceleration();
-                  }
-                },
-                m_imageBuffer->m_weakPtrFactory.createWeakPtr()));
+        TaskRunnerHelper::get(TaskType::Internal, getExecutionContext())
+            ->postTask(
+                BLINK_FROM_HERE,
+                WTF::bind(&ImageBuffer::disableAcceleration,
+                          m_imageBuffer->m_weakPtrFactory.createWeakPtr()));
         m_numFramesSinceLastRenderingModeSwitch = 0;
         m_pendingRenderingModeSwitch = true;
       }
     }
   }
 
   if (m_pendingRenderingModeSwitch && buffer() && !buffer()->isAccelerated()) {
     m_pendingRenderingModeSwitch = false;
   }
 
@@ skipping 1047 matching lines @@
   mojom::blink::OffscreenCanvasSurfacePtr service;
   Platform::current()->interfaceProvider()->getInterface(
       mojo::GetProxy(&service));
   m_surfaceLayerBridge =
       wrapUnique(new CanvasSurfaceLayerBridge(std::move(service)));
   return m_surfaceLayerBridge->createSurfaceLayer(this->width(),
                                                   this->height());
 }
 
 }  // namespace blink