cc: Implement shared worker contexts. (v1)

blimp/client/compositor/blimp_context_provider.cc

Index: blimp/client/compositor/blimp_context_provider.cc
diff --git a/blimp/client/compositor/blimp_context_provider.cc b/blimp/client/compositor/blimp_context_provider.cc
index 303d3093995df217a9b45809b4e14193f74edeac..42c29710d566bb48f0dfaf124d20d018ffd96d26 100644
--- a/blimp/client/compositor/blimp_context_provider.cc
+++ b/blimp/client/compositor/blimp_context_provider.cc
@@ -47,7 +47,8 @@ scoped_refptr<BlimpContextProvider> BlimpContextProvider::Create(
   return new BlimpContextProvider(widget);
 }
 
-BlimpContextProvider::BlimpContextProvider(gfx::AcceleratedWidget widget) {
+BlimpContextProvider::BlimpContextProvider(gfx::AcceleratedWidget widget)
+    : lost_(false) {
   context_thread_checker_.DetachFromThread();
 
   gpu::gles2::ContextCreationAttribHelper attribs_for_gles2;
@@ -72,8 +73,6 @@ BlimpContextProvider::BlimpContextProvider(gfx::AcceleratedWidget widget) {
 }
 
 BlimpContextProvider::~BlimpContextProvider() {
-  DCHECK(main_thread_checker_.CalledOnValidThread() ||
-         context_thread_checker_.CalledOnValidThread());
 }
 
 bool BlimpContextProvider::BindToCurrentThread() {
@@ -150,11 +149,11 @@ void BlimpContextProvider::DeleteCachedResources() {
     gr_context_->freeGpuResources();
 }
 
-bool BlimpContextProvider::DestroyedOnMainThread() {
+bool BlimpContextProvider::HasBeenLostOnMainThread() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
-  base::AutoLock lock(destroyed_lock_);
-  return destroyed_;
+  base::AutoLock lock(lost_lock_);
+  return lost_;
 }
 
 void BlimpContextProvider::SetLostContextCallback(
@@ -173,10 +172,10 @@ void BlimpContextProvider::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())
@@ -185,4 +184,9 @@ void BlimpContextProvider::OnLostContext() {
     gr_context_->abandonContext();
 }
 
+bool BlimpContextProvider::HasBeenDestroyed() {
+  DCHECK(context_thread_checker_.CalledOnValidThread());
+  return false;
+}
+
 }  // namespace blimp