Change some functions in ImeEngineObserver as not ChromeOS-only.

chrome/browser/extensions/api/input_ime/input_ime_api.h

 // Copyright (c) 2012 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_H_
 #define CHROME_BROWSER_EXTENSIONS_API_INPUT_IME_INPUT_IME_API_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 24 matching lines @@
 class IMEEngineHandlerInterface;
 class IMEEngineObserver;
 
 class ImeObserver : public IMEEngineObserver {
  public:
   ImeObserver(const std::string& extension_id, Profile* profile);
 
   ~ImeObserver() override {}
 
   // IMEEngineObserver overrides.
+  void OnActivate(const std::string& component_id) override;
   void OnFocus(const IMEEngineHandlerInterface::InputContext& context) override;
   void OnBlur(int context_id) override;
   void OnKeyEvent(
       const std::string& component_id,
       const IMEEngineHandlerInterface::KeyboardEvent& event,
       IMEEngineHandlerInterface::KeyEventDoneCallback& key_data) override;
   void OnReset(const std::string& component_id) override;
   void OnDeactivated(const std::string& component_id) override;
   void OnCompositionBoundsChanged(
       const std::vector<gfx::Rect>& bounds) override;
+  bool IsInterestedInKeyEvent() const override;
+  void OnSurroundingTextChanged(const std::string& component_id,
+                                const std::string& text,
+                                int cursor_pos,
+                                int anchor_pos,
+                                int offset_pos) override;
 
  protected:
   // Helper function used to forward the given event to the |profile_|'s event
   // router, which dipatches the event the extension with |extension_id_|.
   virtual void DispatchEventToExtension(
       extensions::events::HistogramValue histogram_value,
       const std::string& event_name,
       scoped_ptr<base::ListValue> args) = 0;
 
+  // Returns the type of the current screen.
+  virtual std::string GetCurrentScreenType() = 0;
+
   // Returns true if the extension is ready to accept key event, otherwise
   // returns false.
   bool ShouldForwardKeyEvent() const;
 
   // Returns true if there are any listeners on the given event.
   bool HasListener(const std::string& event_name) const;
 
   // Functions used to convert InputContext struct to string
   std::string ConvertInputContextType(
       IMEEngineHandlerInterface::InputContext input_context);
@@ skipping 119 matching lines @@
   // Listen to extension load, unloaded notifications.
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 };
 
 InputImeEventRouter* GetInputImeEventRouter(Profile* profile);
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_INPUT_IME_INPUT_IME_API_H_