More accelerator code leanup

ui/wm/core/nested_accelerator_delegate.h

 // Copyright 2014 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 UI_WM_CORE_NESTED_ACCELERATOR_DELEGATE_H_
 #define UI_WM_CORE_NESTED_ACCELERATOR_DELEGATE_H_
 
 namespace ui {
-class KeyEvent;
+class Accelerator;
 }
 
 namespace wm {
 
 // A delegate interface that implements the behavior of nested accelerator
 // handling.
 class NestedAcceleratorDelegate {
  public:
+  enum Result {
+    RESULT_PROCESSED,
+    RESULT_NOT_PROCESSED,
+    // The key event should be ignored now and instead be reposted so that
+    // next event loop.
+    RESULT_PROCESS_LATER,
+  };
+
   virtual ~NestedAcceleratorDelegate() {}
 
-  // If the key event should be ignored now and instead be reposted so that next
-  // event loop.
-  virtual bool ShouldProcessEventNow(const ui::KeyEvent& key_event) = 0;
-
-  // Attempts to process an accelerator for the key-event.
-  // Returns whether an accelerator was triggered and processed.
-  virtual bool ProcessEvent(const ui::KeyEvent& key_event) = 0;
+  // Attempts to process the |accelerator|.
+  virtual Result ProcessAccelerator(const ui::Accelerator& accelerator) = 0;
 };
 
 }  // namespace wm
 
 #endif  // UI_WM_CORE_NESTED_ACCELERATOR_DELEGATE_H_