gpu: Lose context when BeginQueryEXT fails to allocate.

Instead of crashes, raise a GL_OUT_OF_MEMORY error. Since compositor
does not want to deal with these errors and it would leave it in a
bad state, add the ability to lose the context when GL_OUT_OF_MEMORY
occurs.

R=dmichael@chromium.org, jamesr@chromium.org, piman@chromium.org, piman
BUG=351587

Review URL: https://codereview.chromium.org/199443004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@261120 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 6 insertions, 2 deletions

diff --git a/mojo/examples/aura_demo/demo_context_factory.cc b/mojo/examples/aura_demo/demo_context_factory.cc
index e9312ad..4040208 100644
--- a/mojo/examples/aura_demo/demo_context_factory.cc
+++ b/mojo/examples/aura_demo/demo_context_factory.cc
@@ -56,8 +56,10 @@ DemoContextFactory::OffscreenCompositorContextProvider() {
     // to leak the context provider when we shutdown to avoid destroying the
     // contexts on the wrong thread.
     DCHECK(!ui::Compositor::WasInitializedWithThread());
+    bool lose_context_when_out_of_memory = true;
     offscreen_compositor_contexts_ =
-        webkit::gpu::ContextProviderInProcess::CreateOffscreen();
+        webkit::gpu::ContextProviderInProcess::CreateOffscreen(
+            lose_context_when_out_of_memory);
   }
   return offscreen_compositor_contexts_;
 }
@@ -66,8 +68,10 @@ scoped_refptr<cc::ContextProvider>
 DemoContextFactory::SharedMainThreadContextProvider() {
   if (!shared_main_thread_contexts_ ||
       shared_main_thread_contexts_->DestroyedOnMainThread()) {
+    bool lose_context_when_out_of_memory = false;
     shared_main_thread_contexts_ =
-        webkit::gpu::ContextProviderInProcess::CreateOffscreen();
+        webkit::gpu::ContextProviderInProcess::CreateOffscreen(
+            lose_context_when_out_of_memory);
     if (shared_main_thread_contexts_ &&
         !shared_main_thread_contexts_->BindToCurrentThread())
       shared_main_thread_contexts_ = NULL;