Move views::Accelerator to ui in order to use it from aura code.

ui/base/models/accelerator.h

Index: ui/base/models/accelerator.h
diff --git a/ui/base/models/accelerator.h b/ui/base/models/accelerator.h
index 83170b79a48bf286f51bb872a8d3c2c68ae478c8..c73b5c2dcf2ec76d24d585be53f35d808364e8cf 100644
--- a/ui/base/models/accelerator.h
+++ b/ui/base/models/accelerator.h
@@ -6,6 +6,7 @@
 #define UI_BASE_MODELS_ACCELERATOR_H_
 #pragma once
 
+#include "ui/base/events.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/base/ui_export.h"
 
@@ -26,6 +27,18 @@ class UI_EXPORT Accelerator {
     modifiers_ = accelerator.modifiers_;
   }
 
+  Accelerator(ui::KeyboardCode keycode,
+              bool shift_pressed, bool ctrl_pressed, bool alt_pressed) {
+    key_code_ = keycode;
+    modifiers_ = 0;
+    if (shift_pressed)
+      modifiers_ |= ui::EF_SHIFT_DOWN;
+    if (ctrl_pressed)
+      modifiers_ |= ui::EF_CONTROL_DOWN;
+    if (alt_pressed)
+      modifiers_ |= ui::EF_ALT_DOWN;
+  }
+
   virtual ~Accelerator() {}
 
   Accelerator& operator=(const Accelerator& accelerator) {
@@ -56,6 +69,18 @@ class UI_EXPORT Accelerator {
 
   int modifiers() const { return modifiers_; }
 
+  bool IsShiftDown() const {
+    return (modifiers_ & ui::EF_SHIFT_DOWN) == ui::EF_SHIFT_DOWN;
+  }
+
+  bool IsCtrlDown() const {
+    return (modifiers_ & ui::EF_CONTROL_DOWN) == ui::EF_CONTROL_DOWN;
+  }
+
+  bool IsAltDown() const {
+    return (modifiers_ & ui::EF_ALT_DOWN) == ui::EF_ALT_DOWN;
+  }
+
  protected:
   // The keycode (VK_...).
   ui::KeyboardCode key_code_;
@@ -64,6 +89,17 @@ class UI_EXPORT Accelerator {
   int modifiers_;
 };
 
+// An interface that classes that want to register for keyboard accelerators
+// should implement.
+class UI_EXPORT AcceleratorTarget {
+ public:
+  // This method should return true if the accelerator was processed.
+  virtual bool AcceleratorPressed(const Accelerator& accelerator) = 0;
+
+ protected:
+  virtual ~AcceleratorTarget() {}
+};
+
 // Since acclerator code is one of the few things that can't be cross platform
 // in the chrome UI, separate out just the GetAcceleratorForCommandId() from
 // the menu delegates.