Add decode() functionality to image elements.

third_party/WebKit/Source/core/frame/WebFrameWidgetBase.cpp

Index: third_party/WebKit/Source/core/frame/WebFrameWidgetBase.cpp
diff --git a/third_party/WebKit/Source/core/frame/WebFrameWidgetBase.cpp b/third_party/WebKit/Source/core/frame/WebFrameWidgetBase.cpp
index ee49720c5701c7fda347cc86a82bc34600f39e00..9199de67f8449fe7007f2dcef54aae877c652fdb 100644
--- a/third_party/WebKit/Source/core/frame/WebFrameWidgetBase.cpp
+++ b/third_party/WebKit/Source/core/frame/WebFrameWidgetBase.cpp
@@ -253,6 +253,12 @@ void WebFrameWidgetBase::DidLosePointerLock() {
   GetPage()->GetPointerLockController().DidLosePointerLock();
 }
 
+void WebFrameWidgetBase::RequestDecode(
+    sk_sp<SkImage> image,
+    std::unique_ptr<WTF::Function<void(bool)>> callback) {
+  View()->RequestDecode(std::move(image), std::move(callback));
+}
+
 // TODO(665924): Remove direct dispatches of mouse events from
 // PointerLockController, instead passing them through EventHandler.
 void WebFrameWidgetBase::PointerLockMouseEvent(