cc: Unify context losing machinery

cc/resource_provider.cc

Index: cc/resource_provider.cc
diff --git a/cc/resource_provider.cc b/cc/resource_provider.cc
index c2b44d28e8e0885674e6233fe0024ab0227616bd..d091bd2aa8cf6a4fe3863d79a4fdcb8401460b12 100644
--- a/cc/resource_provider.cc
+++ b/cc/resource_provider.cc
@@ -956,4 +956,13 @@ bool ResourceProvider::didSetPixelsComplete(ResourceId 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