Fix cropped floating gesture candidate window

ui/keyboard/keyboard_controller.cc

Index: ui/keyboard/keyboard_controller.cc
diff --git a/ui/keyboard/keyboard_controller.cc b/ui/keyboard/keyboard_controller.cc
index 1be0200b898f84923265c89bc6b2d92363b0e60f..a1b7c2c85c4247f07760e32a66297fead9c78c68 100644
--- a/ui/keyboard/keyboard_controller.cc
+++ b/ui/keyboard/keyboard_controller.cc
@@ -271,18 +271,14 @@ void KeyboardController::NotifyKeyboardBoundsChanging(
       // window is created while the keyboard is visible.
       scoped_ptr<content::RenderWidgetHostIterator> widgets(
           content::RenderWidgetHost::GetRenderWidgetHosts());
-      aura::Window* keyboard_window = proxy_->GetKeyboardWindow();
-      aura::Window* root_window = keyboard_window->GetRootWindow();
+      aura::Window* root_window = proxy_->GetKeyboardWindow()->GetRootWindow();
       while (content::RenderWidgetHost* widget = widgets->GetNextHost()) {
         content::RenderWidgetHostView* view = widget->GetView();
         // Can be NULL, e.g. if the RenderWidget is being destroyed or
         // the render process crashed.
         if (view) {
           aura::Window* window = view->GetNativeView();
-          // If virtual keyboard failed to load, a widget that displays error
-          // message will be created and adds as a child of the virtual keyboard
-          // window. We want to avoid add BoundsChangedObserver to that window.
-          if (!keyboard_window->Contains(window) &&
+          if (proxy_->ShouldWindowOverscroll(window) &&
               window->GetRootWindow() == root_window) {
             gfx::Rect window_bounds = window->GetBoundsInScreen();
             gfx::Rect intersect = gfx::IntersectRects(window_bounds,
@@ -476,7 +472,7 @@ bool KeyboardController::ShouldEnableInsets(aura::Window* window) {
 
 void KeyboardController::UpdateWindowInsets(aura::Window* window) {
   aura::Window* keyboard_window = proxy_->GetKeyboardWindow();
-  if (window == keyboard_window)
+  if (!proxy_->ShouldWindowOverscroll(window))
     return;
 
   scoped_ptr<content::RenderWidgetHostIterator> widgets(