Fix cropped floating gesture candidate window

ash/root_window_controller.cc

Index: ash/root_window_controller.cc
diff --git a/ash/root_window_controller.cc b/ash/root_window_controller.cc
index 97fd09eb2f5c33d7a34f3412c8e660c6c5900274..5bdee973a3843d81ad8f8a6bd31d2b1c28f6b1a8 100644
--- a/ash/root_window_controller.cc
+++ b/ash/root_window_controller.cc
@@ -678,7 +678,7 @@ void RootWindowController::DeactivateKeyboard(
 }
 
 bool RootWindowController::IsVirtualKeyboardWindow(aura::Window* window) {
-  aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
+  aura::Window* parent = GetContainer(kShellWindowId_VirtualKeyboardContainer);

[sadrul, 2015/09/14 20:28:09]

It's unclear to me if this can break existing code that makes incorrect
assumptions about vk-window and ime-candidate windows. So this can possibly be a
separate CL, so that it can be reverted if something breaks.

[bshe, 2015/09/15 13:09:33]

make sense. reverted it in this CL and will upload a separate CL. 

   return parent ? parent->Contains(window) : false;
 }