Use per-frame WebTaskRunner in HTMLCanvasElement

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

Index: third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
index 3d4ef0a1a3c796c9c8924e38c78b2339033c701f..6dbe9eb35c0d9571b8a9b6c6037aef323daca61f 100644
--- a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
@@ -350,15 +350,11 @@ void HTMLCanvasElement::didFinalizeFrame() {
         !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;
       }