Support mojo applications in GPU process.

content/gpu/gpu_child_thread.cc

Index: content/gpu/gpu_child_thread.cc
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index e40928cd82a696d4dc88f320beac678296625d1a..951d41aaf2e2e74cd90f45a0eb510139795c5586 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -12,6 +12,7 @@
 #include "content/child/thread_safe_sender.h"
 #include "content/common/gpu/gpu_memory_buffer_factory.h"
 #include "content/common/gpu/gpu_messages.h"
+#include "content/gpu/gpu_process_control_impl.h"
 #include "content/gpu/gpu_watchdog_thread.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
@@ -182,6 +183,12 @@ void GpuChildThread::Shutdown() {
 
 void GpuChildThread::Init(const base::Time& process_start_time) {
   process_start_time_ = process_start_time;
+
+  process_control_.reset(new GpuProcessControlImpl());
+  // Use of base::Unretained(this) is safe here because |service_registry()|
+  // and the message loop will be destroyed before GpuChildThread is destructed.

[piman, 2015/10/08 22:37:02]

To be clear, does that mean BindProcessControlRequest is called on a separate
thread? If so, can you add comments about this? It sounds like process_control_
is accessed from 2 threads. Is that ok?

[xhwang, 2015/10/09 23:36:35]

Sorry I didn't make it clear. BindProcessControlRequest() is only called on the
main/UI thread. I was just saying even if
GpuChildThread::BindProcessControlRequest() is posted to the message loop we are
still okay. But now I look at ServiceRegistryImpl's implementation that's not
gonna happen.

+  service_registry()->AddService(base::Bind(
+      &GpuChildThread::BindProcessControlRequest, base::Unretained(this)));
 }
 
 bool GpuChildThread::Send(IPC::Message* msg) {
@@ -374,4 +381,10 @@ void GpuChildThread::OnGpuSwitched() {
   ui::GpuSwitchingManager::GetInstance()->NotifyGpuSwitched();
 }
 
+void GpuChildThread::BindProcessControlRequest(
+    mojo::InterfaceRequest<ProcessControl> request) {
+  DCHECK(process_control_);
+  process_control_bindings_.AddBinding(process_control_.get(), request.Pass());
+}
+
 }  // namespace content