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

chrome/browser/extensions/api/input_ime/input_ime_api_nonchromeos.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_EXTENSIONS_API_INPUT_IME_INPUT_IME_API_NONCHROMEOS_H_
 #define CHROME_BROWSER_EXTENSIONS_API_INPUT_IME_INPUT_IME_API_NONCHROMEOS_H_
 
 #include "chrome/browser/extensions/api/input_ime/input_ime_event_router_base.h"
 #include "chrome/browser/profiles/profile.h"
 #include "extensions/browser/extension_function.h"
@@ skipping 23 matching lines @@
   ~InputImeEventRouter() override;
 
   // Gets the input method engine if the extension is active.
   input_method::InputMethodEngineBase* GetActiveEngine(
       const std::string& extension_id) override;
 
   // Actives the extension with new input method engine, and deletes the
   // previous engine if another extension was active.
   void SetActiveEngine(const std::string& extension_id);
 
+  input_method::InputMethodEngine* active_engine() {
+    return active_engine_;
+  }
+
   // Deletes the current input method engine of the specific extension.
   void DeleteInputMethodEngine(const std::string& extension_id);
 
  private:
   // The active input method engine.
   input_method::InputMethodEngine* active_engine_;
 
   DISALLOW_COPY_AND_ASSIGN(InputImeEventRouter);
 };
 
@@ skipping 58 matching lines @@
  protected:
   ~InputImeDeactivateFunction() override {}
 
   // UIThreadExtensionFunction:
   ResponseAction Run() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_INPUT_IME_INPUT_IME_API_NONCHROMEOS_H_