Add decode() functionality to image elements.

third_party/WebKit/Source/web/ChromeClientImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 924 matching lines @@
       WebConsoleMessage(WebConsoleMessage::LevelError, message));
 
   return false;
 }
 
 WebLayerTreeView* ChromeClientImpl::getWebLayerTreeView(LocalFrame* frame) {
   WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(frame);
   return webFrame->localRoot()->frameWidget()->getLayerTreeView();
 }
 
+void ChromeClientImpl::requestDecode(
+    sk_sp<SkImage> image,
+    std::unique_ptr<WTF::Function<void(bool)>> callback) {
+  m_webView->requestDecode(std::move(image), std::move(callback));
+}
+
 void ChromeClientImpl::setEventListenerProperties(
     LocalFrame* frame,
     WebEventListenerClass eventClass,
     WebEventListenerProperties properties) {
   // |frame| might be null if called via TreeScopeAdopter::
   // moveNodeToNewDocument() and the new document has no frame attached.
   // Since a document without a frame cannot attach one later, it is safe to
   // exit early.
   if (!frame)
     return;
@@ skipping 274 matching lines @@
     PresentationController::provideTo(frame, client->presentationClient());
   if (RuntimeEnabledFeatures::audioOutputDevicesEnabled()) {
     provideAudioOutputDeviceClientTo(frame,
                                      new AudioOutputDeviceClientImpl(frame));
   }
   if (RuntimeEnabledFeatures::installedAppEnabled())
     InstalledAppController::provideTo(frame, client->getRelatedAppsFetcher());
 }
 
 }  // namespace blink