Enable webui in content layer.

Allow to access Chrome's webuis(chrome://gpu, chrome://tracing) in Atom Shell.

brightray/common/content_client.cc

@@ -46,4 +46,9 @@ gfx::Image& ContentClient::GetNativeImageNamed(int resource_id) const {
       resource_id);
 }
 
+base::RefCountedStaticMemory* ContentClient::GetDataResourceBytes(
+      int resource_id) const {
+  return ResourceBundle::GetSharedInstance().LoadDataResourceBytes(resource_id);
+}
+
 }  // namespace brightray

brightray/common/content_client.h

@@ -22,6 +22,8 @@ class ContentClient : public content::ContentClient {
   base::StringPiece GetDataResource(int resource_id,
                                     ui::ScaleFactor) const override;
   gfx::Image& GetNativeImageNamed(int resource_id) const override;
+  base::RefCountedStaticMemory* GetDataResourceBytes(
+      int resource_id) const override;
 
   DISALLOW_COPY_AND_ASSIGN(ContentClient);
 };