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

views/focus/focus_manager_unittest.cc

Index: views/focus/focus_manager_unittest.cc
diff --git a/views/focus/focus_manager_unittest.cc b/views/focus/focus_manager_unittest.cc
index b2497e369e94e842a6672db2e9ca23ee0b8e8cab..2d2e18b2a17d56e575fba5a2d49ed5f81365420e 100644
--- a/views/focus/focus_manager_unittest.cc
+++ b/views/focus/focus_manager_unittest.cc
@@ -1294,7 +1294,7 @@ class TestAcceleratorTarget : public AcceleratorTarget {
   explicit TestAcceleratorTarget(bool process_accelerator)
       : accelerator_count_(0), process_accelerator_(process_accelerator) {}
 
-  virtual bool AcceleratorPressed(const Accelerator& accelerator) {
+  virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) {
     ++accelerator_count_;
     return process_accelerator_;
   }
@@ -1401,7 +1401,7 @@ TEST_F(FocusManagerTest, CallsNormalAcceleratorTarget) {
 }
 
 // Unregisters itself when its accelerator is invoked.
-class SelfUnregisteringAcceleratorTarget : public AcceleratorTarget {
+class SelfUnregisteringAcceleratorTarget : public ui::AcceleratorTarget {
  public:
   SelfUnregisteringAcceleratorTarget(Accelerator accelerator,
                                      FocusManager* focus_manager)
@@ -1410,7 +1410,7 @@ class SelfUnregisteringAcceleratorTarget : public AcceleratorTarget {
         accelerator_count_(0) {
   }
 
-  virtual bool AcceleratorPressed(const Accelerator& accelerator) {
+  virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) {
     ++accelerator_count_;
     focus_manager_->UnregisterAccelerator(accelerator, this);
     return true;