Don't reuse a GpuProcessHost that failed to send a message

content/browser/gpu/gpu_process_host.h

Index: content/browser/gpu/gpu_process_host.h
diff --git a/content/browser/gpu/gpu_process_host.h b/content/browser/gpu/gpu_process_host.h
index be82a75be48e9749185751a145ab79e98b74f4a0..761c05766f543f601f65af4de6ce68d00fa24b2d 100644
--- a/content/browser/gpu/gpu_process_host.h
+++ b/content/browser/gpu/gpu_process_host.h
@@ -171,6 +171,9 @@ class GpuProcessHost : public content::BrowserChildProcessHostDelegate,
   // Qeueud messages to send when the process launches.
   std::queue<IPC::Message*> queued_messages_;
 
+  // Whether the GPU process is valid, set to false after Send() failed.
+  bool valid_;
+
   // Whether we are running a GPU thread inside the browser process instead
   // of a separate GPU process.
   bool in_process_;