getInstalledRelatedApps: Add browser-side Mojo service (stub).

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index f74e19a27a75a49ba84ac89963f48479fae5a23b..106caf61f10aa1ec3641e163efe77cb696cd55df 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -35,6 +35,7 @@
 #include "content/browser/frame_host/render_frame_host_delegate.h"
 #include "content/browser/frame_host/render_frame_proxy_host.h"
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
+#include "content/browser/installedapp/installed_app_provider_impl_default.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/media/media_interface_proxy.h"
 #include "content/browser/media/session/media_session_service_impl.h"
@@ -2279,6 +2280,13 @@ void RenderFrameHostImpl::OnShowCreatedWindow(int pending_widget_routing_id,
 void RenderFrameHostImpl::RegisterMojoInterfaces() {
   device::GeolocationServiceContext* geolocation_service_context =
       delegate_ ? delegate_->GetGeolocationServiceContext() : NULL;
+
+  // The default (no-op) implementation of InstalledAppProvider.
+  // TODO(mgiuca): Implement the "real" one for Android in Java, and do not add
+  // the default one on that platform.
+  GetInterfaceRegistry()->AddInterface(
+      base::Bind(&InstalledAppProviderImplDefault::Create));
+
   if (geolocation_service_context) {
     // TODO(creis): Bind process ID here so that GeolocationServiceImpl
     // can perform permissions checks once site isolation is complete.