Make DispatchKeyEventPostIME() asynchronous.

ui/base/ime/input_method_chromeos.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_BASE_IME_INPUT_METHOD_CHROMEOS_H_
 #define UI_BASE_IME_INPUT_METHOD_CHROMEOS_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 31 matching lines @@
   void CancelComposition(const TextInputClient* client) override;
   bool IsCandidatePopupOpen() const override;
 
  protected:
   // Converts |text| into CompositionText.
   void ExtractCompositionText(const CompositionText& text,
                               uint32_t cursor_position,
                               CompositionText* out_composition) const;
 
   // Process a key returned from the input method.
-  virtual ui::EventDispatchDetails ProcessKeyEventPostIME(ui::KeyEvent* event,
-                                                          bool handled)
-      WARN_UNUSED_RESULT;
+  virtual ui::EventDispatchDetails ProcessKeyEventPostIME(
+      ui::KeyEvent* event,
+      std::unique_ptr<AckCallback> ack_callback,
+      bool skip_process_filtered,
+      bool handled) WARN_UNUSED_RESULT;
 
   // Resets context and abandon all pending results and key events.
   void ResetContext();
 
+  ui::EventDispatchDetails DispatchKeyEventPostIME(
+      ui::KeyEvent* event,
+      std::unique_ptr<AckCallback> ack_callback) const WARN_UNUSED_RESULT;
+
  private:
   class PendingKeyEvent;
 
   // Overridden from InputMethodBase:
   void OnWillChangeFocusedClient(TextInputClient* focused_before,
                                  TextInputClient* focused) override;
   void OnDidChangeFocusedClient(TextInputClient* focused_before,
                                 TextInputClient* focused) override;
 
   // Asks the client to confirm current composition text.
   void ConfirmCompositionText();
 
   // Checks the availability of focused text input client and update focus
   // state.
   void UpdateContextFocusState();
 
   // Processes a key event that was already filtered by the input method.
   // A VKEY_PROCESSKEY may be dispatched to the EventTargets.
   // It returns the result of whether the event has been stopped propagation
   // when dispatching post IME.
-  ui::EventDispatchDetails ProcessFilteredKeyPressEvent(ui::KeyEvent* event)
-      WARN_UNUSED_RESULT;
+  ui::EventDispatchDetails ProcessFilteredKeyPressEvent(
+      ui::KeyEvent* event,
+      std::unique_ptr<AckCallback> ack_callback) WARN_UNUSED_RESULT;
+
+  void PostProcessFilteredKeyPressEvent(
+      ui::KeyEvent* event,
+      TextInputClient* prev_client,
+      std::unique_ptr<AckCallback> ack_callback,
+      bool stopped_propagation);
 
   // Processes a key event that was not filtered by the input method.
-  ui::EventDispatchDetails ProcessUnfilteredKeyPressEvent(ui::KeyEvent* event)
-      WARN_UNUSED_RESULT;
+  ui::EventDispatchDetails ProcessUnfilteredKeyPressEvent(
+      ui::KeyEvent* event,
+      std::unique_ptr<AckCallback> ack_callback) WARN_UNUSED_RESULT;
+
+  void PostProcessUnfilteredKeyPressEvent(
+      ui::KeyEvent* event,
+      TextInputClient* prev_client,
+      std::unique_ptr<AckCallback> ack_callback,
+      bool stopped_propagation);
 
   // Sends input method result caused by the given key event to the focused text
   // input client.
   void ProcessInputMethodResult(ui::KeyEvent* event, bool filtered);
 
   // Checks if the pending input method result needs inserting into the focused
   // text input client as a single character.
   bool NeedInsertChar() const;
 
   // Checks if there is pending input method result.
@@ skipping 57 matching lines @@
 
   // Used for making callbacks.
   base::WeakPtrFactory<InputMethodChromeOS> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InputMethodChromeOS);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_INPUT_METHOD_CHROMEOS_H_