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

views/focus/focus_manager.cc

Index: views/focus/focus_manager.cc
diff --git a/views/focus/focus_manager.cc b/views/focus/focus_manager.cc
index 82eddf4598072375808f7481b92af2b398aaa819..d0dccb47376050650ab44119cfae7720e787ec3c 100644
--- a/views/focus/focus_manager.cc
+++ b/views/focus/focus_manager.cc
@@ -357,7 +357,7 @@ View* FocusManager::FindFocusableView(FocusTraversable* focus_traversable,
 
 void FocusManager::RegisterAccelerator(
     const Accelerator& accelerator,
-    AcceleratorTarget* target) {
+    ui::AcceleratorTarget* target) {
   AcceleratorTargetList& targets = accelerators_[accelerator];
   DCHECK(std::find(targets.begin(), targets.end(), target) == targets.end())
       << "Registering the same target multiple times";
@@ -365,7 +365,7 @@ void FocusManager::RegisterAccelerator(
 }
 
 void FocusManager::UnregisterAccelerator(const Accelerator& accelerator,
-                                         AcceleratorTarget* target) {
+                                         ui::AcceleratorTarget* target) {
   AcceleratorMap::iterator map_iter = accelerators_.find(accelerator);
   if (map_iter == accelerators_.end()) {
     NOTREACHED() << "Unregistering non-existing accelerator";
@@ -383,7 +383,7 @@ void FocusManager::UnregisterAccelerator(const Accelerator& accelerator,
   targets->erase(target_iter);
 }
 
-void FocusManager::UnregisterAccelerators(AcceleratorTarget* target) {
+void FocusManager::UnregisterAccelerators(ui::AcceleratorTarget* target) {
   for (AcceleratorMap::iterator map_iter = accelerators_.begin();
        map_iter != accelerators_.end(); ++map_iter) {
     AcceleratorTargetList* targets = &map_iter->second;
@@ -406,7 +406,7 @@ bool FocusManager::ProcessAccelerator(const Accelerator& accelerator) {
   return false;
 }
 
-AcceleratorTarget* FocusManager::GetCurrentTargetForAccelerator(
+ui::AcceleratorTarget* FocusManager::GetCurrentTargetForAccelerator(
     const views::Accelerator& accelerator) const {
   AcceleratorMap::const_iterator map_iter = accelerators_.find(accelerator);
   if (map_iter == accelerators_.end() || map_iter->second.empty())