cc: Unify context losing machinery

cc/resource_provider.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/resource_provider.h"
 
 #include <limits.h>
 
 #include "base/debug/alias.h"
 #include "base/hash_tables.h"
@@ skipping 938 matching lines @@
         if (!complete)
             return false;
     }
 
     resource->pendingSetPixels = false;
     unlockForWrite(id);
 
     return true;
 }
 
+void ResourceProvider::loseOutputSurface() {
+  WebGraphicsContext3D* context3d = m_outputSurface->Context3D();

[jamesr, 2012/12/18 21:24:01]

this file's currently 4-space indent. i think being consistent within a file
will make automated (or semi-automated) conversion easier so i'd like to stay
consistent

+  DCHECK(context3d);
+  if (!context3d)
+    return;
+  context3d->loseContextCHROMIUM(
+      GL_GUILTY_CONTEXT_RESET_EXT, GL_INNOCENT_CONTEXT_RESET_EXT);
+}
+
 }  // namespace cc