Makes the InputMethodEngine can be switched per profile when the top-level browser window is switch…

chrome/browser/ui/input_method/input_method_engine_base.h

 // Copyright 2016 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 CHROME_BROWSER_UI_INPUT_METHOD_INPUT_METHOD_ENGINE_BASE_H_
 #define CHROME_BROWSER_UI_INPUT_METHOD_INPUT_METHOD_ENGINE_BASE_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 86 matching lines @@
     // Returns whether the observer is interested in key events.
     virtual bool IsInterestedInKeyEvent() const = 0;
 
     // Called when a surrounding text is changed.
     virtual void OnSurroundingTextChanged(const std::string& engine_id,
                                           const std::string& text,
                                           int cursor_pos,
                                           int anchor_pos,
                                           int offset_pos) = 0;
 
+    // Called when the engine's MaybeSwitchEngine is called.
+    virtual void OnRequestEngineSwitch() = 0;
+
 #if defined(OS_CHROMEOS)
 
     // Called when an InputContext's properties change while it is focused.
     virtual void OnInputContextUpdate(
         const IMEEngineHandlerInterface::InputContext& context) = 0;
 
     // Called when the user clicks on an item in the candidate list.
     virtual void OnCandidateClicked(
         const std::string& component_id,
         int candidate_id,
@@ skipping 13 matching lines @@
                   const char* extension_id,
                   Profile* profile);
 
   // IMEEngineHandlerInterface overrides.
   void FocusIn(const ui::IMEEngineHandlerInterface::InputContext& input_context)
       override;
   void FocusOut() override;
   void Enable(const std::string& component_id) override;
   void Disable() override;
   void Reset() override;
+  void MaybeSwitchEngine() override;
   void ProcessKeyEvent(const ui::KeyEvent& key_event,
                        KeyEventDoneCallback& callback) override;
   void SetSurroundingText(const std::string& text,
                           uint32_t cursor_pos,
                           uint32_t anchor_pos,
                           uint32_t offset_pos) override;
   void SetCompositionBounds(const std::vector<gfx::Rect>& bounds) override;
   bool ClearComposition(int context_id, std::string* error) override;
   bool CommitText(int context_id,
                   const char* text,
@@ skipping 83 matching lines @@
   bool commit_text_changed_;
 
   // Indicates whether the IME extension is currently handling a physical key
   // event. This is used in CommitText/UpdateCompositionText/etc.
   bool handling_key_event_;
 };
 
 }  // namespace input_method
 
 #endif  // CHROME_BROWSER_UI_INPUT_METHOD_INPUT_METHOD_ENGINE_BASE_H_