Add decode() functionality to image elements.

third_party/WebKit/Source/web/ChromeClientImpl.cpp

Index: third_party/WebKit/Source/web/ChromeClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/ChromeClientImpl.cpp b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
index 7d5ce48afac864772797a51f9d4a02f06f194e84..da30a50d3678934c4220e6640d505a2d9f45bc16 100644
--- a/third_party/WebKit/Source/web/ChromeClientImpl.cpp
+++ b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
@@ -942,6 +942,12 @@ WebLayerTreeView* ChromeClientImpl::getWebLayerTreeView(LocalFrame* 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,