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..4a9ebb9692d9229ad8d885db7a8889e5a3c2f9fb 100644
--- a/blimp/engine/session/blimp_engine_session.cc
+++ b/blimp/engine/session/blimp_engine_session.cc
@@ -5,6 +5,7 @@
 #include "blimp/engine/session/blimp_engine_session.h"
 
 #include <string>
+#include <utility>
 
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
@@ -292,6 +293,10 @@ void BlimpEngineSession::Initialize() {
                  engine_config_->client_token()));
 }
 
+EngineGeolocationFeature* BlimpEngineSession::GetGeolocationFeature() {
+  return &geolocation_feature_;
+}
+
 void BlimpEngineSession::GetEnginePortForTesting(
     const GetPortCallback& callback) {
   content::BrowserThread::PostTaskAndReplyWithResult(
@@ -324,6 +329,9 @@ 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_));