Add FrameHost mojo service

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 0589ae0fd41baea60f25ee2b9d37029e560ae10d..2e859845cee831dee6f01c04998ca7974e5c1ce8 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -74,6 +74,7 @@
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/gpu/shader_disk_cache.h"
 #include "content/browser/histogram_message_filter.h"
+#include "content/browser/host_zoom_level_impl.h"
 #include "content/browser/indexed_db/indexed_db_context_impl.h"
 #include "content/browser/indexed_db/indexed_db_dispatcher_host.h"
 #include "content/browser/loader/resource_message_filter.h"
@@ -1046,6 +1047,10 @@ void RenderProcessHostImpl::RegisterMojoServices() {
       base::Bind(&RenderProcessHostImpl::CreateStoragePartitionService,
                  base::Unretained(this)));
 
+  mojo_application_host_->service_registry()->AddService(
+      base::Bind(&HostZoomLevelImpl::Create,
+                 base::Unretained(GetBrowserContext()), GetID()));
+
 #if defined(OS_ANDROID)
   ServiceRegistrarAndroid::RegisterProcessHostServices(
       mojo_application_host_->service_registry_android());