Revert of cc: Stop blocking the main thread in CreateAndInitializeOutputSurface.

cc/scheduler/scheduler.h

Index: cc/scheduler/scheduler.h
diff --git a/cc/scheduler/scheduler.h b/cc/scheduler/scheduler.h
index d67a017497e925aa999c76982e29e5a29b437762..a80d4495485b602126b7bf1c6ed95c18f9aed6fe 100644
--- a/cc/scheduler/scheduler.h
+++ b/cc/scheduler/scheduler.h
@@ -94,6 +94,9 @@
   void DidManageTiles();
   void DidLoseOutputSurface();
   void DidCreateAndInitializeOutputSurface();
+  bool HasInitializedOutputSurface() const {
+    return state_machine_.HasInitializedOutputSurface();
+  }
 
   bool CommitPending() const { return state_machine_.CommitPending(); }
   bool RedrawPending() const { return state_machine_.RedrawPending(); }