Execute all GL commands up to the put offset reported by a flush.

ppapi/proxy/ppb_context_3d_proxy.cc

Index: ppapi/proxy/ppb_context_3d_proxy.cc
===================================================================
--- ppapi/proxy/ppb_context_3d_proxy.cc	(revision 92876)
+++ ppapi/proxy/ppb_context_3d_proxy.cc	(working copy)
@@ -87,6 +87,7 @@
   virtual bool Initialize(base::SharedMemory* buffer, int32 size);
   virtual gpu::Buffer GetRingBuffer();
   virtual State GetState();
+  virtual State GetLastState();
   virtual void Flush(int32 put_offset);
   virtual State FlushSync(int32 put_offset, int32 last_known_get);
   virtual void SetGetOffset(int32 get_offset);
@@ -186,6 +187,10 @@
   return last_state_;
 }
 
+gpu::CommandBuffer::State PepperCommandBuffer::GetLastState() {
+  return last_state_;
+}
+
 void PepperCommandBuffer::Flush(int32 put_offset) {
   if (last_state_.error != gpu::error::kNoError)
     return;