Add EF_IS_REPEAT flag to KeyEvent to handle repeated accelerators correctly.

ash/accelerators/nested_accelerator_delegate.cc

Index: ash/accelerators/nested_accelerator_delegate.cc
diff --git a/ash/accelerators/nested_accelerator_delegate.cc b/ash/accelerators/nested_accelerator_delegate.cc
index f83e1ebe083947ae43a93d6b6a7cef353527f3b2..0129e7a268baae342a1747b26601b4b5c04acaa0 100644
--- a/ash/accelerators/nested_accelerator_delegate.cc
+++ b/ash/accelerators/nested_accelerator_delegate.cc
@@ -63,12 +63,9 @@ bool NestedAcceleratorDelegate::ProcessEvent(const ui::KeyEvent& key_event) {
       (ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN);
   ui::Accelerator accelerator(key_event.key_code(),
                               key_event.flags() & kModifierMask);
+  accelerator.set_is_repeat(key_event.IsRepeat());
   if (key_event.type() == ui::ET_KEY_RELEASED)
     accelerator.set_type(ui::ET_KEY_RELEASED);
-  // Fill out context object so AcceleratorController will know what
-  // was the previous accelerator or if the current accelerator is repeated.
-  Shell::GetInstance()->accelerator_controller()->context()->UpdateContext(
-      accelerator);
   return accelerator_controller->Process(accelerator);
 }