Only add rescheduled message when there are commands to reschedule.

content/common/gpu/gpu_command_buffer_stub.cc

  // Copyright (c) 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.
 
 #if defined(ENABLE_GPU)
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 124 matching lines @@
 }
 
 bool GpuCommandBufferStub::IsScheduled() {
   return !scheduler_.get() || scheduler_->IsScheduled();
 }
 
 bool GpuCommandBufferStub::HasMoreWork() {
   return scheduler_.get() && scheduler_->HasMoreWork();
 }
 
+bool GpuCommandBufferStub::HasUnprocessedCommands() {
+  if (command_buffer_.get()) {
+    gpu::CommandBuffer::State state = command_buffer_->GetLastState();
+    return state.put_offset != state.get_offset;
+  }
+  return false;
+}
+
 void GpuCommandBufferStub::OnEcho(const IPC::Message& message) {
   TRACE_EVENT0("gpu", "GpuCommandBufferStub::OnEcho");
   Send(new IPC::Message(message));
 }
 
 void GpuCommandBufferStub::Destroy() {
   // The scheduler has raw references to the decoder and the command buffer so
   // destroy it before those.
   scheduler_.reset();
 
@@ skipping 428 matching lines @@
     return;
   if (allocation.has_frontbuffer && allocation.has_backbuffer)
     surface_->SetVisibility(gfx::GLSurface::VISIBILITY_STATE_FOREGROUND);
   else if (allocation.has_frontbuffer)
     surface_->SetVisibility(gfx::GLSurface::VISIBILITY_STATE_BACKGROUND);
   else
     surface_->SetVisibility(gfx::GLSurface::VISIBILITY_STATE_HIBERNATED);
 }
 
 #endif  // defined(ENABLE_GPU)