NOT FOR LANDING - [WebView] Allow fling animation via the LayerScrollOffsetDelegate

content/browser/android/in_process/synchronous_compositor_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/android/in_process/synchronous_compositor_impl.h"
 
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "cc/input/input_handler.h"
 #include "content/browser/android/in_process/synchronous_compositor_factory_impl.h"
@@ skipping 247 matching lines @@
         page_scale_factor, min_page_scale_factor, max_page_scale_factor);
 }
 
 void SynchronousCompositorImpl::SetScrollableSize(
     const gfx::SizeF& scrollable_size) {
   DCHECK(CalledOnValidThread());
   if (compositor_client_)
     compositor_client_->SetRootLayerScrollableSize(scrollable_size);
 }
 
+void SynchronousCompositorImpl::SetNeedsAnimate(
+    const AnimationCallback& animation) {
+  DCHECK(CalledOnValidThread());
+  if (compositor_client_)
+    compositor_client_->SetNeedsAnimate(animation);
+}
+
 // Not using base::NonThreadSafe as we want to enforce a more exacting threading
 // requirement: SynchronousCompositorImpl() must only be used on the UI thread.
 bool SynchronousCompositorImpl::CalledOnValidThread() const {
   return BrowserThread::CurrentlyOn(BrowserThread::UI);
 }
 
 // static
 void SynchronousCompositor::SetClientForWebContents(
     WebContents* contents,
     SynchronousCompositorClient* client) {
   DCHECK(contents);
   if (client) {
     g_factory.Get();  // Ensure it's initialized.
     SynchronousCompositorImpl::CreateForWebContents(contents);
   }
   if (SynchronousCompositorImpl* instance =
       SynchronousCompositorImpl::FromWebContents(contents)) {
     instance->SetClient(client);
   }
 }
 
 }  // namespace content