Make limitations for input.ime.sendKeyEvents API.

ui/base/ime/input_method_base.h

Index: ui/base/ime/input_method_base.h
diff --git a/ui/base/ime/input_method_base.h b/ui/base/ime/input_method_base.h
index 3a44e37f0ece9239278d04e482b222325ba628da..66a87ebf956775d7004b791920ac6cc7bc49af58 100644
--- a/ui/base/ime/input_method_base.h
+++ b/ui/base/ime/input_method_base.h
@@ -70,6 +70,7 @@ class UI_BASE_IME_EXPORT InputMethodBase
                              bool visible) override;
   void DeleteSurroundingText(int32_t offset, uint32_t length) override;
   void SendKeyEvent(KeyEvent* event) override;
+  InputMethod* GetInputMethod() override;
 
   // Sends a fake key event for IME composing without physical key events.
   // Returns true if the faked key event is stopped propagation.
@@ -108,6 +109,10 @@ class UI_BASE_IME_EXPORT InputMethodBase
   bool sending_key_event_;
 
  private:
+  // InputMethod:
+  const std::vector<std::unique_ptr<ui::KeyEvent>>& GetKeyEventsForTesting()
+      override;
+
   void SetFocusedTextInputClientInternal(TextInputClient* client);
 
   internal::InputMethodDelegate* delegate_;
@@ -115,6 +120,8 @@ class UI_BASE_IME_EXPORT InputMethodBase
 
   base::ObserverList<InputMethodObserver> observer_list_;
 
+  std::vector<std::unique_ptr<ui::KeyEvent>> key_events_for_testing_;
+
   DISALLOW_COPY_AND_ASSIGN(InputMethodBase);
 };