cc: Implement shared worker contexts. (v1)

components/view_manager/surfaces/surfaces_context_provider.cc

Index: components/view_manager/surfaces/surfaces_context_provider.cc
diff --git a/components/view_manager/surfaces/surfaces_context_provider.cc b/components/view_manager/surfaces/surfaces_context_provider.cc
index 9f2defa4fc9c2795fb6b9f0398ff0fa0ace2b877..7efff2109b2c6741c3adfbe6c2f5752374104dcc 100644
--- a/components/view_manager/surfaces/surfaces_context_provider.cc
+++ b/components/view_manager/surfaces/surfaces_context_provider.cc
@@ -100,7 +100,7 @@ base::Lock* SurfacesContextProvider::GetLock() {
   return &context_lock_;
 }
 
-bool SurfacesContextProvider::DestroyedOnMainThread() {
+bool SurfacesContextProvider::HasBeenLostOnMainThread() {
   return !command_buffer_local_;
 }
 
@@ -109,6 +109,10 @@ void SurfacesContextProvider::SetLostContextCallback(
   lost_context_callback_ = lost_context_callback;
 }
 
+bool SurfacesContextProvider::HasBeenDestroyed() {
+  return !command_buffer_local_;
+}
+
 SurfacesContextProvider::~SurfacesContextProvider() {
   implementation_->Flush();
   implementation_.reset();