content/gpu: Set up a mojom connection between browser and gpu.

content/browser/browser_child_process_host_impl.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.
 
 #include "content/browser/browser_child_process_host_impl.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/dump_without_crashing.h"
@@ skipping 143 matching lines @@
   g_observers.Get().RemoveObserver(observer);
 }
 
 BrowserChildProcessHostImpl::BrowserChildProcessHostImpl(
     content::ProcessType process_type,
     BrowserChildProcessHostDelegate* delegate,
     const std::string& service_name)
     : data_(process_type),
       delegate_(delegate),
       child_token_(mojo::edk::GenerateRandomToken()),
+      channel_(nullptr),
       is_channel_connected_(false),
       notify_child_disconnected_(false),
       weak_factory_(this) {
   data_.id = ChildProcessHostImpl::GenerateChildProcessUniqueId();
 
   child_process_host_.reset(ChildProcessHost::Create(this));
   AddFilter(new TraceMessageFilter(data_.id));
   AddFilter(new ProfilerMessageFilter(process_type));
   AddFilter(new HistogramMessageFilter);
   AddFilter(new MemoryMessageFilter(this, process_type));
@@ skipping 215 matching lines @@
   // what the bad message was.
   base::debug::DumpWithoutCrashing();
 
   child_process_->GetProcess().Terminate(RESULT_CODE_KILLED_BAD_MESSAGE, false);
 }
 
 bool BrowserChildProcessHostImpl::CanShutdown() {
   return delegate_->CanShutdown();
 }
 
+void BrowserChildProcessHostImpl::OnChannelInitialized(IPC::Channel* channel) {
+  channel_ = channel;
+}
+
 void BrowserChildProcessHostImpl::OnChildDisconnected() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 #if defined(OS_WIN)
   // OnChildDisconnected may be called without OnChannelConnected, so stop the
   // early exit watcher so GetTerminationStatus can close the process handle.
   early_exit_watcher_.StopWatching();
 #endif
   if (child_process_.get() || data_.handle) {
     int exit_code;
     base::TerminationStatus status = GetTerminationStatus(
@@ skipping 39 matching lines @@
                               data_.process_type,
                               PROCESS_TYPE_MAX);
 #if defined(OS_CHROMEOS)
     if (status == base::TERMINATION_STATUS_PROCESS_WAS_KILLED_BY_OOM) {
       UMA_HISTOGRAM_ENUMERATION("ChildProcess.Killed2.OOM",
                                 data_.process_type,
                                 PROCESS_TYPE_MAX);
     }
 #endif
   }
+  channel_ = nullptr;
   delete delegate_;  // Will delete us
 }
 
 bool BrowserChildProcessHostImpl::Send(IPC::Message* message) {
   return child_process_host_->Send(message);
 }
 
 void BrowserChildProcessHostImpl::CreateMetricsAllocator() {
   // Create a persistent memory segment for subprocess histograms only if
   // they're active in the browser.
@@ skipping 132 matching lines @@
 
 #if defined(OS_WIN)
 
 void BrowserChildProcessHostImpl::OnObjectSignaled(HANDLE object) {
   OnChildDisconnected();
 }
 
 #endif
 
 }  // namespace content