Add EF_IS_REPEAT flag to KeyEvent to handle repeated accelerators correctly.

ash/accelerators/accelerator_delegate.cc

Index: ash/accelerators/accelerator_delegate.cc
diff --git a/ash/accelerators/accelerator_delegate.cc b/ash/accelerators/accelerator_delegate.cc
index 234b8ba9aa106be1256f079a04fc26375cf72033..9dbd41035a902ef5a8a748ed18de49ab59e19b9b 100644
--- a/ash/accelerators/accelerator_delegate.cc
+++ b/ash/accelerators/accelerator_delegate.cc
@@ -19,14 +19,6 @@ AcceleratorDelegate::AcceleratorDelegate() {
 AcceleratorDelegate::~AcceleratorDelegate() {
 }
 
-void AcceleratorDelegate::PreProcessAccelerator(
-    const ui::Accelerator& accelerator) {
-  // 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);
-}
-
 bool AcceleratorDelegate::ProcessAccelerator(const ui::KeyEvent& key_event,
                                              const ui::Accelerator& accelerator,
                                              KeyType key_type) {