gpu: Raise GL_OUT_OF_MEMORY when BeginQueryEXT fails to allocate.

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index e0b0cb82f60b36b2a9e5f3f39217aaec0112f9d4..37f433af0e0fdcb80f1686c5532914c929cb256e 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -3285,7 +3285,16 @@ void GLES2Implementation::BeginQueryEXT(GLenum target, GLuint id) {
   if (!query) {
     query = query_tracker_->CreateQuery(id, target);
     if (!query) {
-      MustBeContextLost();

[piman, 2014/03/14 00:45:57]

I think that was the last caller. Can you remove MustBeContextLost altogether?

[danakj, 2014/03/14 01:15:49]

Oh! Done.

+      bool context_lost = helper_->IsContextLost();
+      if (!context_lost) {
+        WaitForCmd();
+        context_lost = helper_->IsContextLost();
+      }
+      if (!context_lost) {
+        SetGLError(GL_OUT_OF_MEMORY,
+                   "BeginQueryEXT",
+                   "Transfer buffer allocation failed.");
+      }
       return;
     }
   } else if (query->target() != target) {