exo: Recreate Surface resources on context lost.

content/browser/compositor/gpu_process_transport_factory.cc

Index: content/browser/compositor/gpu_process_transport_factory.cc
diff --git a/content/browser/compositor/gpu_process_transport_factory.cc b/content/browser/compositor/gpu_process_transport_factory.cc
index 2c0e1453fad86e443e081853eb71cdc6a48b3917..303d7a06a646a025ce9fc8f1a4ac6b6c3a866d8e 100644
--- a/content/browser/compositor/gpu_process_transport_factory.cc
+++ b/content/browser/compositor/gpu_process_transport_factory.cc
@@ -589,8 +589,8 @@ void GpuProcessTransportFactory::RemoveCompositor(ui::Compositor* compositor) {
 
     // If there are any observer left at this point, make sure they clean up
     // before we destroy the GLHelper.
-    FOR_EACH_OBSERVER(
-        ImageTransportFactoryObserver, observer_list_, OnLostResources());
+    FOR_EACH_OBSERVER(ui::ContextFactoryObserver, observer_list_,
+                      OnLostResources());
 
     helper.reset();
     DCHECK(!gl_helper_) << "Destroying the GLHelper should not cause a new "
@@ -686,16 +686,6 @@ display_compositor::GLHelper* GpuProcessTransportFactory::GetGLHelper() {
   return gl_helper_.get();
 }
 
-void GpuProcessTransportFactory::AddObserver(
-    ImageTransportFactoryObserver* observer) {
-  observer_list_.AddObserver(observer);
-}
-
-void GpuProcessTransportFactory::RemoveObserver(
-    ImageTransportFactoryObserver* observer) {
-  observer_list_.RemoveObserver(observer);
-}
-
 #if defined(OS_MACOSX)
 void GpuProcessTransportFactory::SetCompositorSuspendedForRecycle(
     ui::Compositor* compositor,
@@ -788,8 +778,7 @@ void GpuProcessTransportFactory::OnLostMainThreadSharedContext() {
   std::unique_ptr<display_compositor::GLHelper> lost_gl_helper =
       std::move(gl_helper_);
 
-  FOR_EACH_OBSERVER(ImageTransportFactoryObserver,
-                    observer_list_,
+  FOR_EACH_OBSERVER(ui::ContextFactoryObserver, observer_list_,
                     OnLostResources());
 
   // Kill things that use the shared context before killing the shared context.