Enable ChannelMojo for non-renderer child processes

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index be1437451b93cfe3bf8cc80ddd54259721a1b88b..654f49cbc359cedb56b13942570546523610cf6d 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -34,6 +34,7 @@
 #include "content/public/browser/render_widget_host_view_frame_subscriber.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
+#include "content/public/common/mojo_channel_switches.h"
 #include "content/public/common/result_codes.h"
 #include "content/public/common/sandboxed_process_launcher_delegate.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
@@ -516,7 +517,8 @@ bool GpuProcessHost::Init() {
 #endif
     in_process_gpu_thread_->StartWithOptions(options);
 
-    OnProcessLaunched();  // Fake a callback that the process is ready.
+    process_->NotifyProcessLaunched();  // Fake a callback that the process is
+                                        // ready.
   } else if (!LaunchGpuProcess(channel_id)) {
     return false;
   }
@@ -556,6 +558,10 @@ void GpuProcessHost::AddFilter(IPC::MessageFilter* filter) {
   process_->GetHost()->AddFilter(filter);
 }
 
+bool GpuProcessHost::ShouldUseMojoChannel() {
+  return content::ShouldUseMojoChannel();
+}
+
 bool GpuProcessHost::OnMessageReceived(const IPC::Message& message) {
   DCHECK(CalledOnValidThread());
   IPC_BEGIN_MESSAGE_MAP(GpuProcessHost, message)