Add PDF compositor service

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 ca604b46f0445a946247cccde55798a26bc34d72..559761085f1171efead85a5138536c4312138248 100644
--- a/content/browser/utility_process_host_impl.cc
+++ b/content/browser/utility_process_host_impl.cc
@@ -4,6 +4,7 @@
 
 #include "content/browser/utility_process_host_impl.h"
 
+#include <memory>
 #include <utility>
 
 #include "base/base_switches.h"
@@ -22,7 +23,9 @@
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "build/build_config.h"
+#include "components/discardable_memory/service/discardable_shared_memory_manager.h"
 #include "content/browser/browser_child_process_host_impl.h"
+#include "content/browser/browser_main_loop.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/service_manager/service_manager_context.h"
 #include "content/common/child_process_host_impl.h"
@@ -32,6 +35,7 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/utility_process_host_client.h"
+#include "content/public/common/connection_filter.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/mojo_channel_switches.h"
 #include "content/public/common/process_type.h"
@@ -40,6 +44,8 @@
 #include "content/public/common/service_manager_connection.h"
 #include "content/public/common/service_names.mojom.h"
 #include "mojo/edk/embedder/embedder.h"
+#include "services/service_manager/public/cpp/bind_source_info.h"
+#include "services/service_manager/public/cpp/binder_registry.h"
 #include "services/service_manager/public/cpp/interface_provider.h"
 #include "ui/base/ui_base_switches.h"
 
@@ -128,6 +134,29 @@ class UtilitySandboxedProcessLauncherDelegate
 
 UtilityMainThreadFactoryFunction g_utility_main_thread_factory = NULL;
 
+class UtilityProcessHostImpl::ConnectionFilterImpl : public ConnectionFilter {
+ public:
+  explicit ConnectionFilterImpl(
+      std::unique_ptr<service_manager::BinderRegistry> registry)
+      : registry_(std::move(registry)) {}
+
+ private:
+  // ConnectionFilter:
+  void OnBindInterface(const service_manager::BindSourceInfo& source_info,
+                       const std::string& interface_name,
+                       mojo::ScopedMessagePipeHandle* interface_pipe,
+                       service_manager::Connector* connector) override {
+    if (registry_->CanBindInterface(interface_name)) {
+      registry_->BindInterface(source_info, interface_name,
+                               std::move(*interface_pipe));
+    }
+  }
+
+  std::unique_ptr<service_manager::BinderRegistry> registry_;
+
+  DISALLOW_COPY_AND_ASSIGN(ConnectionFilterImpl);
+};
+
 UtilityProcessHost* UtilityProcessHost::Create(
     const scoped_refptr<UtilityProcessHostClient>& client,
     const scoped_refptr<base::SequencedTaskRunner>& client_task_runner) {
@@ -227,6 +256,26 @@ void UtilityProcessHostImpl::BindInterface(
                                               std::move(interface_pipe));
 }
 
+void UtilityProcessHostImpl::RegisterMojoServices() {
+  auto registry = base::MakeUnique<service_manager::BinderRegistry>();
+  // May be null during test execution.
+  if (ServiceManagerConnection::GetForProcess()) {
+    registry->AddInterface(base::Bind(
+        &memory_instrumentation::CoordinatorImpl::BindCoordinatorRequest,
+        base::Unretained(
+            memory_instrumentation::CoordinatorImpl::GetInstance())));
+
+    discardable_memory::DiscardableSharedMemoryManager* manager =
+        BrowserMainLoop::GetInstance()->discardable_shared_memory_manager();
+    registry->AddInterface(
+        base::Bind(&discardable_memory::DiscardableSharedMemoryManager::Bind,
+                   base::Unretained(manager)));
+
+    ServiceManagerConnection::GetForProcess()->AddConnectionFilter(
+        base::MakeUnique<ConnectionFilterImpl>(std::move(registry)));
+  }
+}
+
 void UtilityProcessHostImpl::SetName(const base::string16& name) {
   name_ = name;
 }