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

views/controls/textfield/native_textfield_win.cc

Index: views/controls/textfield/native_textfield_win.cc
diff --git a/views/controls/textfield/native_textfield_win.cc b/views/controls/textfield/native_textfield_win.cc
index f1c2dc045bd523b6014a36262c86ae0d8e42162f..0b0c6f6f5481b96dd19e29a0cd986a537c3d887a 100644
--- a/views/controls/textfield/native_textfield_win.cc
+++ b/views/controls/textfield/native_textfield_win.cc
@@ -416,13 +416,13 @@ bool NativeTextfieldWin::GetAcceleratorForCommandId(int command_id,
   // anywhere so we need to check for them explicitly here.
   switch (command_id) {
     case IDS_APP_CUT:
-      *accelerator = views::Accelerator(ui::VKEY_X, false, true, false);
+      *accelerator = ui::Accelerator(ui::VKEY_X, false, true, false);
       return true;
     case IDS_APP_COPY:
-      *accelerator = views::Accelerator(ui::VKEY_C, false, true, false);
+      *accelerator = ui::Accelerator(ui::VKEY_C, false, true, false);
       return true;
     case IDS_APP_PASTE:
-      *accelerator = views::Accelerator(ui::VKEY_V, false, true, false);
+      *accelerator = ui::Accelerator(ui::VKEY_V, false, true, false);
       return true;
   }
   return container_view_->GetWidget()->GetAccelerator(command_id, accelerator);