cc: Make OutputSurface::BindToClient pure virtual and not return bool

android_webview/browser/surfaces_instance.cc

 // Copyright 2016 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 "android_webview/browser/surfaces_instance.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "android_webview/browser/aw_gl_surface.h"
@@ skipping 74 matching lines @@
   DCHECK_EQ(g_surfaces_instance, this);
   g_surfaces_instance = nullptr;
 
   DCHECK(child_ids_.empty());
   if (!root_id_.is_null())
     surface_factory_->Destroy(root_id_);
 
   surface_manager_->InvalidateFrameSinkId(frame_sink_id_);
 }
 
+void SurfacesInstance::DisplayOutputSurfaceLost() {
+  // Android WebView does not handle context loss.
+  LOG(FATAL) << "Render thread context loss";
+}
+
 cc::FrameSinkId SurfacesInstance::AllocateFrameSinkId() {
   return cc::FrameSinkId(next_client_id_++, 0 /* sink_id */);
 }
 
 cc::SurfaceManager* SurfacesInstance::GetSurfaceManager() {
   return surface_manager_.get();
 }
 
 void SurfacesInstance::DrawAndSwap(const gfx::Size& viewport,
                                    const gfx::Rect& clip,
@@ skipping 73 matching lines @@
   CHECK(resources.empty());
 }
 
 void SurfacesInstance::SetBeginFrameSource(
     cc::BeginFrameSource* begin_frame_source) {
   // Parent compsitor calls DrawAndSwap directly and doesn't use
   // BeginFrameSource.
 }
 
 }  // namespace android_webview