Change some functions in ImeEngineObserver as not ChromeOS-only.

ui/base/ime/ime_engine_observer.h

Index: ui/base/ime/ime_engine_observer.h
diff --git a/ui/base/ime/ime_engine_observer.h b/ui/base/ime/ime_engine_observer.h
index 3bdcab1e9007e9ae69efa20dc9627fddd11fdd7a..7a2bf9d2682c2a15c66482abb245dd12063a1619 100644
--- a/ui/base/ime/ime_engine_observer.h
+++ b/ui/base/ime/ime_engine_observer.h
@@ -14,6 +14,9 @@ class IMEEngineObserver {
  public:
   virtual ~IMEEngineObserver() {}
 
+  // Called when the IME becomes the active IME.
+  virtual void OnActivate(const std::string& engine_id) = 0;
+
   // Called when a text field gains focus, and will be sending key events.
   virtual void OnFocus(
       const IMEEngineHandlerInterface::InputContext& context) = 0;
@@ -37,6 +40,16 @@ class IMEEngineObserver {
   virtual void OnCompositionBoundsChanged(
       const std::vector<gfx::Rect>& bounds) = 0;
 
+  // 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;
+
 // ChromeOS only APIs.
 #if defined(OS_CHROMEOS)
 
@@ -46,15 +59,11 @@ class IMEEngineObserver {
     MOUSE_BUTTON_MIDDLE,
   };
 
-  // Called when the IME becomes the active IME.
-  virtual void OnActivate(const std::string& engine_id) = 0;
-
   // Called when an InputContext's properties change while it is focused.
   virtual void OnInputContextUpdate(
       const IMEEngineHandlerInterface::InputContext& context) = 0;
 
-  // Returns whether the observer is interested in key events.
-  virtual bool IsInterestedInKeyEvent() const = 0;
+
 
   // Called when the user clicks on an item in the candidate list.
   virtual void OnCandidateClicked(const std::string& engine_id,
@@ -64,13 +73,6 @@ class IMEEngineObserver {
   // Called when a menu item for this IME is interacted with.
   virtual void OnMenuItemActivated(const std::string& engine_id,
                                    const std::string& menu_id) = 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;
 #endif
 };