Remove extension_misc::IsImeMenuExtensionId.

ash/common/wm/window_state.h

Index: ash/common/wm/window_state.h
diff --git a/ash/common/wm/window_state.h b/ash/common/wm/window_state.h
index 37df31338ee3f8b5c440b203d991106aecfb5529..c2ff99d9039e0704ff03250f3f1c9ccbf696d516 100644
--- a/ash/common/wm/window_state.h
+++ b/ash/common/wm/window_state.h
@@ -114,10 +114,6 @@ class ASH_EXPORT WindowState {
   // Returns true if the window's location can be controlled by the user.
   bool IsUserPositionable() const;
 
-  // Returns true is the window should be excluded from the most recently used
-  // windows list.
-  bool ShouldBeExcludedFromMru() const;
-
   // Checks if the window can change its state accordingly.
   bool CanMaximize() const;
   bool CanMinimize() const;
@@ -134,7 +130,6 @@ class ASH_EXPORT WindowState {
   void Maximize();
   void Minimize();
   void Unminimize();
-  void SetExcludedFromMru(bool excluded_from_mru);
 
   void Activate();
   void Deactivate();