Remove InputMethodContext.

sky/engine/public/web/WebWidget.h

Index: sky/engine/public/web/WebWidget.h
diff --git a/sky/engine/public/web/WebWidget.h b/sky/engine/public/web/WebWidget.h
index 491e4f2fec9255d66c59341a16685b142ae5740f..4a394aa61b971cc8e894e1fdfa0c5d92c7fa1366 100644
--- a/sky/engine/public/web/WebWidget.h
+++ b/sky/engine/public/web/WebWidget.h
@@ -119,13 +119,6 @@ public:
     // Returns information about the current text input of this WebWidget.
     virtual WebTextInputInfo textInputInfo() = 0;
 
-    // Called to notify that IME candidate window has changed its visibility or
-    // its appearance. These calls correspond to trigger
-    // candidatewindow{show,update,hide} events defined in W3C IME API.
-    virtual void didShowCandidateWindow() = 0;
-    virtual void didUpdateCandidateWindow() = 0;
-    virtual void didHideCandidateWindow() = 0;
-
     // The page background color. Can be used for filling in areas without
     // content.
     virtual WebColor backgroundColor() const = 0;