Adds EngineGeolocationFeature for Blimp Geolocation project.

blimp/engine/session/blimp_engine_session.cc

Index: blimp/engine/session/blimp_engine_session.cc
diff --git a/blimp/engine/session/blimp_engine_session.cc b/blimp/engine/session/blimp_engine_session.cc
index 70134b671f01cbcba85f928a93333bf16cd2911b..29c1c46de114408b61dda156d40f391ab1dbc1d8 100644
--- a/blimp/engine/session/blimp_engine_session.cc
+++ b/blimp/engine/session/blimp_engine_session.cc
@@ -292,6 +292,10 @@ void BlimpEngineSession::Initialize() {
                  engine_config_->client_token()));
 }
 
+EngineGeolocationFeature* BlimpEngineSession::GetGeolocationFeature() {
+  return &geolocation_feature_;
+}
+
 void BlimpEngineSession::GetEnginePortForTesting(
     const GetPortCallback& callback) {
   content::BrowserThread::PostTaskAndReplyWithResult(
@@ -324,6 +328,9 @@ void BlimpEngineSession::RegisterFeatures() {
   render_widget_feature_.set_ime_message_sender(
       thread_pipe_manager_->RegisterFeature(BlimpMessage::kIme,
                                             &render_widget_feature_));
+  geolocation_feature_.set_outgoing_message_processor(
+      thread_pipe_manager_->RegisterFeature(BlimpMessage::kGeolocation,
+                                            &geolocation_feature_));
   blob_delegate_->set_outgoing_message_processor(
       thread_pipe_manager_->RegisterFeature(BlimpMessage::kBlobChannel,
                                             blob_delegate_));