Remove --ash-disable-overview-mode

ash/focus_cycler.cc

Index: ash/focus_cycler.cc
diff --git a/ash/focus_cycler.cc b/ash/focus_cycler.cc
index c83db87b134cdc2a3f335f6caae00cf525172064..eea4aed6cd439f74c668c58f7ae68faa82afe37e 100644
--- a/ash/focus_cycler.cc
+++ b/ash/focus_cycler.cc
@@ -6,7 +6,7 @@
 
 #include "ash/shell.h"
 #include "ash/wm/mru_window_tracker.h"
-#include "ash/wm/window_cycle_controller.h"
+#include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/window.h"
@@ -77,13 +77,12 @@ void FocusCycler::RotateFocus(Direction direction) {
 
     if (index == browser_index) {
       // Activate the most recently active browser window.
-      ash::Shell::GetInstance()->window_cycle_controller()->HandleCycleWindow(
-          WindowCycleController::FORWARD, false);
-
-      // Rotate pane focus within that window.
-      aura::Window* window = ash::wm::GetActiveWindow();
-      if (!window)
+      MruWindowTracker::WindowList mru_windows(
+          Shell::GetInstance()->mru_window_tracker()->BuildMruWindowList());
+      if (mru_windows.empty())
         break;
+      aura::Window* window(mru_windows[mru_windows.size() > 1 ? 1 : 0]);
+      wm::GetWindowState(window)->Activate();

[oshima, 2014/02/28 17:54:39]

So this case, we're activating the top most (if there is only one) anyway
because the window may be minimized?

[flackr, 2014/03/11 19:55:07]

Looking into this we only ever expect to cycle focus between the status area and
the last active browser. I've updated the test to reflect this and always used
.front().

       views::Widget* widget = views::Widget::GetWidgetForNativeWindow(window);
       if (!widget)
         break;