Draggable region support for frameless app window on CrOS.

ui/views/widget/native_widget_aura.cc

Index: ui/views/widget/native_widget_aura.cc
diff --git a/ui/views/widget/native_widget_aura.cc b/ui/views/widget/native_widget_aura.cc
index fa5ee73435153f5ad777d550dad7bef87e13aa8a..d2fd5e181bdd10a2498fb9cad27987dceeb6b4be 100644
--- a/ui/views/widget/native_widget_aura.cc
+++ b/ui/views/widget/native_widget_aura.cc
@@ -760,7 +760,14 @@ int NativeWidgetAura::GetNonClientComponent(const gfx::Point& point) const {
 
 bool NativeWidgetAura::ShouldDescendIntoChildForEventHandling(
       aura::Window* child,
-      const gfx::Point& location) {
+      const gfx::Point& event_location,
+      ui::EventType event_type) {
+  views::WidgetDelegate* widget_delegate = GetWidget()->widget_delegate();
+  if (widget_delegate &&
+      !widget_delegate->ShouldDescendIntoChildForEventHandling(
+            child, event_location, event_type))
+    return false;
+
   // Don't descend into |child| if there is a view with a Layer that contains
   // the point and is stacked above |child|s layer.
   typedef std::vector<ui::Layer*> Layers;
@@ -777,7 +784,7 @@ bool NativeWidgetAura::ShouldDescendIntoChildForEventHandling(
   for (std::vector<ui::Layer*>::const_reverse_iterator i = root_layers.rbegin();
        i != root_layers.rend(); ++i) {
     ui::Layer* layer = *i;
-    if (layer->visible() && layer->bounds().Contains(location)) {
+    if (layer->visible() && layer->bounds().Contains(event_location)) {
       Layers::const_iterator root_layer_iter(
           std::find(window_->layer()->children().begin(),
                     window_->layer()->children().end(), layer));