Move common accelerator code from ash to ui/wm/core

ui/wm/core/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_ACCELERATOR_DELEGATE_H_
+#define UI_WM_CORE_ACCELERATOR_DELEGATE_H_
+
+namespace ui {
+class Accelerator;
+class KeyEvent;
+}
+
+namespace wm {
+
+class AcceleratorDelegate {
+ public:
+  virtual ~AcceleratorDelegate() {}
+
+  // TODO(oshima): Move the repeat detection to AcceleratorFilter.
+  virtual void PreProcessAccelerator(const ui::Accelerator& accelerator) = 0;

[oshima, 2014/05/29 06:15:46]

This is new change I added per mtomaz@ suggestion. (I was asking if it's safe to
move this logic to ProcessAccelerator, but it wasn't safe)

FYI: I'll try to eliminate this in seprate CL, as noted in TODO.

+
+  // Returns true if the window should be allowed a chance to handle
+  // system keys.
+  virtual bool CanConsumeSystemKeys(const ui::KeyEvent& event) = 0;
+
+  // Returns true if the |accelerator| should be processed.
+  virtual bool ShouldProcessAcceleratorNow(
+      const ui::KeyEvent& key_event,
+      const ui::Accelerator& accelerator) = 0;
+
+  // Return true if the |accelerator| has been processed.
+  virtual bool ProcessAccelerator(const ui::Accelerator& accelerator) = 0;
+};
+
+}  // namespace wm
+
+#endif  // UI_WM_CORE_ACCELERATOR_DELEGATE_H_