Draggable region support for frameless app window on CrOS.

chrome/browser/ui/views/extensions/shell_window_views.cc

Index: chrome/browser/ui/views/extensions/shell_window_views.cc
diff --git a/chrome/browser/ui/views/extensions/shell_window_views.cc b/chrome/browser/ui/views/extensions/shell_window_views.cc
index 9a02a60ce2259c466cf23cf4134166010bd35db3..8060ee97431910f9389cffc5fdb4d613965547b2 100644
--- a/chrome/browser/ui/views/extensions/shell_window_views.cc
+++ b/chrome/browser/ui/views/extensions/shell_window_views.cc
@@ -492,10 +492,16 @@ const views::Widget* ShellWindowViews::GetWidget() const {
 void ShellWindowViews::OnViewWasResized() {
   // TODO(jeremya): this doesn't seem like a terribly elegant way to keep the
   // window shape in sync.
-#if defined(OS_WIN) && !defined(USE_AURA)
-  // Set the window shape of the RWHV.
   DCHECK(window_);
   DCHECK(web_view_);
+#if defined(USE_ASH)
+  if (draggable_region()) {
+    SkRegion* rgn = new SkRegion;
+    rgn->op(*draggable_region(), SkRegion::kUnion_Op);
+    GetNativeWindow()->SetDraggableRegion(rgn);
+  }
+#elif defined(OS_WIN)
+  // Set the window shape of the RWHV.
   gfx::Size sz = web_view_->size();
   int height = sz.height(), width = sz.width();
   int radius = 1;