cc: Implement shared worker contexts. (v1)

ui/compositor/test/in_process_context_provider.cc

Index: ui/compositor/test/in_process_context_provider.cc
diff --git a/ui/compositor/test/in_process_context_provider.cc b/ui/compositor/test/in_process_context_provider.cc
index 76cd19dc191ff8624982205a2d93b573b0058ecb..57a64ada4e9231c4d73f344b944178d2c284fede 100644
--- a/ui/compositor/test/in_process_context_provider.cc
+++ b/ui/compositor/test/in_process_context_provider.cc
@@ -80,14 +80,19 @@ InProcessContextProvider::InProcessContextProvider(
       image_factory_(image_factory),
       window_(window),
       debug_name_(debug_name),
+      lost_(false),
       destroyed_(false) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   context_thread_checker_.DetachFromThread();
 }
 
-InProcessContextProvider::~InProcessContextProvider() {
-  DCHECK(main_thread_checker_.CalledOnValidThread() ||
-         context_thread_checker_.CalledOnValidThread());
+InProcessContextProvider::~InProcessContextProvider() {}
+
+void InProcessContextProvider::Destroy() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
+  gr_context_ = nullptr;
+  context_.reset();
+  destroyed_ = true;
 }
 
 bool InProcessContextProvider::BindToCurrentThread() {
@@ -200,11 +205,11 @@ void InProcessContextProvider::DeleteCachedResources() {
   }
 }
 
-bool InProcessContextProvider::DestroyedOnMainThread() {
+bool InProcessContextProvider::HasBeenLostOnMainThread() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
-  base::AutoLock lock(destroyed_lock_);
-  return destroyed_;
+  base::AutoLock lock(lost_lock_);
+  return lost_;
 }
 
 void InProcessContextProvider::SetLostContextCallback(
@@ -220,10 +225,10 @@ void InProcessContextProvider::SetMemoryPolicyChangedCallback(
 void InProcessContextProvider::OnLostContext() {
   DCHECK(context_thread_checker_.CalledOnValidThread());
   {
-    base::AutoLock lock(destroyed_lock_);
-    if (destroyed_)
+    base::AutoLock lock(lost_lock_);
+    if (lost_)
       return;
-    destroyed_ = true;
+    lost_ = true;
   }
   if (!lost_context_callback_.is_null())
     base::ResetAndReturn(&lost_context_callback_).Run();
@@ -231,4 +236,9 @@ void InProcessContextProvider::OnLostContext() {
     gr_context_->abandonContext();
 }
 
+bool InProcessContextProvider::HasBeenDestroyed() {
+  DCHECK(context_thread_checker_.CalledOnValidThread());
+  return destroyed_;
+}
+
 }  // namespace ui