Convert plugin and GPU process to brokered handle duplication.

content/browser/gpu/browser_gpu_channel_host_factory.cc

Index: content/browser/gpu/browser_gpu_channel_host_factory.cc
===================================================================
--- content/browser/gpu/browser_gpu_channel_host_factory.cc	(revision 132263)
+++ content/browser/gpu/browser_gpu_channel_host_factory.cc	(working copy)
@@ -26,8 +26,7 @@
 }
 
 BrowserGpuChannelHostFactory::EstablishRequest::EstablishRequest()
-    : event(false, false),
-      gpu_process_handle(base::kNullProcessHandle) {
+    : event(false, false) {
 }
 
 BrowserGpuChannelHostFactory::EstablishRequest::~EstablishRequest() {
@@ -153,10 +152,8 @@
 void BrowserGpuChannelHostFactory::GpuChannelEstablishedOnIO(
     EstablishRequest* request,
     const IPC::ChannelHandle& channel_handle,
-    base::ProcessHandle gpu_process_handle,
     const GPUInfo& gpu_info) {
   request->channel_handle = channel_handle;
-  request->gpu_process_handle = gpu_process_handle;
   request->gpu_info = gpu_info;
   request->event.Signal();
 }
@@ -187,30 +184,15 @@
   // TODO(piman): Make this asynchronous.
   request.event.Wait();
 
-  if (request.channel_handle.name.empty() ||
-      request.gpu_process_handle == base::kNullProcessHandle)
+  if (request.channel_handle.name.empty())
     return NULL;
 
-  base::ProcessHandle browser_process_for_gpu;
-#if defined(OS_WIN)
-  // Create a process handle that the GPU process can use to access our handles.
-  DuplicateHandle(base::GetCurrentProcessHandle(),
-      base::GetCurrentProcessHandle(),
-      request.gpu_process_handle,
-      &browser_process_for_gpu,
-      PROCESS_DUP_HANDLE,
-      FALSE,
-      0);
-#else
-  browser_process_for_gpu = base::GetCurrentProcessHandle();
-#endif
-
   gpu_channel_ = new GpuChannelHost(this, gpu_host_id_, gpu_client_id_);
   gpu_channel_->set_gpu_info(request.gpu_info);
   content::GetContentClient()->SetGpuInfo(request.gpu_info);
 
   // Connect to the GPU process if a channel name was received.
-  gpu_channel_->Connect(request.channel_handle, browser_process_for_gpu);
+  gpu_channel_->Connect(request.channel_handle);
 
   return gpu_channel_.get();
 }