exo: Recreate Surface resources on context lost.

ui/compositor/test/in_process_context_factory.cc

 // Copyright 2014 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 "ui/compositor/test/in_process_context_factory.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 94 matching lines @@
       surface_manager_(surface_manager) {
   DCHECK_NE(gl::GetGLImplementation(), gl::kGLImplementationNone)
       << "If running tests, ensure that main() is calling "
       << "gl::GLSurfaceTestSupport::InitializeOneOff()";
 }
 
 InProcessContextFactory::~InProcessContextFactory() {
   DCHECK(per_compositor_data_.empty());
 }
 
+void InProcessContextFactory::SendOnLostResources() {
+  FOR_EACH_OBSERVER(ContextFactoryObserver, observer_list_, OnLostResources());
+}
+
 void InProcessContextFactory::CreateOutputSurface(
     base::WeakPtr<Compositor> compositor) {
   // Try to reuse existing shared worker context provider.
   bool shared_worker_context_provider_lost = false;
   if (shared_worker_context_provider_) {
     // Note: If context is lost, delete reference after releasing the lock.
     base::AutoLock lock(*shared_worker_context_provider_->GetLock());
     if (shared_worker_context_provider_->ContextGL()
             ->GetGraphicsResetStatusKHR() != GL_NO_ERROR) {
       shared_worker_context_provider_lost = true;
@@ skipping 129 matching lines @@
   return surface_manager_;
 }
 
 void InProcessContextFactory::ResizeDisplay(ui::Compositor* compositor,
                                             const gfx::Size& size) {
   if (!per_compositor_data_.count(compositor))
     return;
   per_compositor_data_[compositor]->Resize(size);
 }
 
+void InProcessContextFactory::AddObserver(ContextFactoryObserver* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void InProcessContextFactory::RemoveObserver(ContextFactoryObserver* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
 }  // namespace ui