Make mash register initial batch of accelerators in single shot.

ash/mus/accelerators/accelerator_controller_registrar.h

Index: ash/mus/accelerators/accelerator_controller_registrar.h
diff --git a/ash/mus/accelerators/accelerator_controller_registrar.h b/ash/mus/accelerators/accelerator_controller_registrar.h
index da2841f6979bc5b64bcfcb49f710e495ba346a34..c3fb1dd1357725296ee0966b9e75aaedf2ce2062 100644
--- a/ash/mus/accelerators/accelerator_controller_registrar.h
+++ b/ash/mus/accelerators/accelerator_controller_registrar.h
@@ -8,6 +8,7 @@
 #include <stdint.h>
 
 #include <map>
+#include <vector>
 
 #include "ash/mus/accelerators/accelerator_handler.h"
 #include "base/macros.h"
@@ -38,10 +39,20 @@ class AcceleratorControllerRegistrar : public AcceleratorHandler,
   ui::mojom::EventResult OnAccelerator(uint32_t id,
                                        const ui::Event& event) override;
 
+  void AddAcceleratorToVector(

[mfomitchev, 2016/12/22 21:18:55]

private, add comment.

[thanhph, 2016/12/24 18:52:16]

Done.

+      const ui::Accelerator& accelerator,
+      std::vector<ui::mojom::AcceleratorPtr>& accelerator_vector);
+
   // ui::AcceleratorManagerDelegate:
   void OnAcceleratorRegistered(const ui::Accelerator& accelerator) override;
   void OnAcceleratorUnregistered(const ui::Accelerator& accelerator) override;
 
+  // Register multiple accelerators with single IPC.

[mfomitchev, 2016/12/22 21:18:55]

This is part of implementation of ui::AcceleratorManagerDelegate. The comment
describing the behavior should be in ui::AcceleratorManagerDelegate, and it
shouldn't be duplicated here.

[thanhph, 2016/12/24 18:52:16]

Done.

+  void OnAcceleratorsRegistered(
+      const std::vector<ui::Accelerator>& accelerators) override;
+  void OnAcceleratorsUnregistered(
+      std::vector<ui::Accelerator>& accelerators) override;
+
  private:
   friend class AcceleratorControllerRegistrarTestApi;
 
@@ -86,6 +97,8 @@ class AcceleratorControllerRegistrar : public AcceleratorHandler,
 
   std::unique_ptr<AcceleratorRouter> router_;
 
+  std::vector<ui::mojom::AcceleratorPtr> accelerator_ptrs_;
+
   // Set of registered local ids.
   std::set<uint16_t> ids_;