[ash-md] Adds support for gesture to move selection in overview mode

ash/common/wm/overview/window_selector_controller.cc

Index: ash/common/wm/overview/window_selector_controller.cc
diff --git a/ash/common/wm/overview/window_selector_controller.cc b/ash/common/wm/overview/window_selector_controller.cc
index 28931f21ddd77bb29e7fa4083313a068197cdc14..2c8b4efa2cf05370fa66a9ea48442e2d6f419fd5 100644
--- a/ash/common/wm/overview/window_selector_controller.cc
+++ b/ash/common/wm/overview/window_selector_controller.cc
@@ -75,6 +75,16 @@ bool WindowSelectorController::IsSelecting() const {
   return window_selector_.get() != NULL;
 }
 
+void WindowSelectorController::IncrementSelection(int increment) {
+  DCHECK(IsSelecting());
+  window_selector_->IncrementSelection(increment);
+}
+
+bool WindowSelectorController::AcceptSelection() {
+  DCHECK(IsSelecting());
+  return window_selector_->AcceptSelection();
+}
+
 bool WindowSelectorController::IsRestoringMinimizedWindows() const {
   return window_selector_.get() != NULL &&
          window_selector_->restoring_minimized_windows();