Convert plugin and GPU process to brokered handle duplication.

BUG=119250
Review URL: https://chromiumcodereview.appspot.com/9958034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@132303 0039d316-1c4b-4281-b951-d872f2087c98
void GpuProcessHost::EstablishChannelError(
    const EstablishChannelCallback& callback,
     const IPC::ChannelHandle& channel_handle,
     base::ProcessHandle renderer_process_for_gpu,
     const content::GPUInfo& gpu_info) {
  callback.Run(channel_handle, gpu_info);
 }

void GpuProcessHost::EstablishChannelError(
    const EstablishChannelCallback& callback,
     const IPC::ChannelHandle& channel_handle,
     base::ProcessHandle renderer_process_for_gpu,
     const content::GPUInfo& gpu_info) {
  callback.Run(channel_handle, renderer_process_for_gpu, gpu_info);
 }
