Remove ui::TextInputClient::GetAttachedWindow

ui/keyboard/keyboard_controller_unittest.cc

Index: ui/keyboard/keyboard_controller_unittest.cc
diff --git a/ui/keyboard/keyboard_controller_unittest.cc b/ui/keyboard/keyboard_controller_unittest.cc
index c2f0c8675515e60bf5d07d1b1f7f17aeec9a836b..3df435a27319e4963dfa7c62b09500963c9e5786 100644
--- a/ui/keyboard/keyboard_controller_unittest.cc
+++ b/ui/keyboard/keyboard_controller_unittest.cc
@@ -141,9 +141,6 @@ class TestTextInputClient : public ui::TextInputClient {
   virtual void ClearCompositionText() OVERRIDE {}
   virtual void InsertText(const base::string16& text) OVERRIDE {}
   virtual void InsertChar(base::char16 ch, int flags) OVERRIDE {}
-  virtual gfx::NativeWindow GetAttachedWindow() const OVERRIDE {
-    return static_cast<gfx::NativeWindow>(NULL);
-  }
   virtual ui::TextInputType GetTextInputType() const OVERRIDE {
     return type_;
   }