WIP: Browser image decoding using Mojo.

content/browser/utility_process_host_impl.cc

Index: content/browser/utility_process_host_impl.cc
diff --git a/content/browser/utility_process_host_impl.cc b/content/browser/utility_process_host_impl.cc
index 0d24e3a5e6906b25fe18e6a41e8ee885251439cb..2abe95b15fa3102219f0aa97ac820690aa3fdf7e 100644
--- a/content/browser/utility_process_host_impl.cc
+++ b/content/browser/utility_process_host_impl.cc
@@ -9,12 +9,14 @@
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
+#include "base/process/process_handle.h"
 #include "base/run_loop.h"
 #include "base/sequenced_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "content/browser/browser_child_process_host_impl.h"
+#include "content/browser/mojo/mojo_application_host.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/common/child_process_host_impl.h"
 #include "content/common/utility_messages.h"
@@ -166,6 +168,19 @@ void UtilityProcessHostImpl::SetEnv(const base::EnvironmentMap& env) {
 
 #endif  // OS_POSIX
 
+bool UtilityProcessHostImpl::StartMojoMode() {
+  mojo_application_host_.reset(new MojoApplicationHost);
+  mojo_application_host_->Init();
+  return StartProcess();
+}
+
+ServiceRegistry* UtilityProcessHostImpl::GetServiceRegistry() {
+  if (mojo_application_host_)
+    return mojo_application_host_->service_registry();
+
+  return nullptr;
+}
+
 bool UtilityProcessHostImpl::StartProcess() {
   if (started_)
     return true;
@@ -297,4 +312,16 @@ void UtilityProcessHostImpl::OnProcessCrashed(int exit_code) {
             exit_code));
 }
 
+void UtilityProcessHostImpl::OnProcessLaunched() {
+  if (mojo_application_host_) {
+    base::ProcessHandle handle;
+    if (RenderProcessHost::run_renderer_in_process())
+      handle = base::GetCurrentProcessHandle();
+    else
+      handle = process_->GetData().handle;
+
+    mojo_application_host_->Activate(this, handle);
+  }
+}
+
 }  // namespace content