Make sure to add rescheduled message when we have unprocessed commands and there's no error.

content/common/gpu/gpu_command_buffer_stub.cc

Index: content/common/gpu/gpu_command_buffer_stub.cc
diff --git a/content/common/gpu/gpu_command_buffer_stub.cc b/content/common/gpu/gpu_command_buffer_stub.cc
index 96ca0ea68ab85ff030ddaac2a1a4a1494614602e..b0d4e63ec18720bf07ccbdee6b26279a2f1315c5 100644
--- a/content/common/gpu/gpu_command_buffer_stub.cc
+++ b/content/common/gpu/gpu_command_buffer_stub.cc
@@ -160,7 +160,8 @@ void GpuCommandBufferStub::PollWork() {
 bool GpuCommandBufferStub::HasUnprocessedCommands() {
   if (command_buffer_.get()) {
     gpu::CommandBuffer::State state = command_buffer_->GetLastState();
-    return state.put_offset != state.get_offset;
+    return state.put_offset != state.get_offset &&
+        !gpu::error::IsError(state.error);
   }
   return false;
 }