[Ash] ShapedAppWindowTargeter treats empty shapes as empty hit test masks.

chrome/browser/ui/views/apps/shaped_app_window_targeter.cc

Index: chrome/browser/ui/views/apps/shaped_app_window_targeter.cc
diff --git a/chrome/browser/ui/views/apps/shaped_app_window_targeter.cc b/chrome/browser/ui/views/apps/shaped_app_window_targeter.cc
index 8e3513adc611eeddbd7ac61b46a67ad6b2045964..6f0e7cdf642b63b0adc155c1d8671cb058595471 100644
--- a/chrome/browser/ui/views/apps/shaped_app_window_targeter.cc
+++ b/chrome/browser/ui/views/apps/shaped_app_window_targeter.cc
@@ -18,5 +18,9 @@ ShapedAppWindowTargeter::~ShapedAppWindowTargeter() {
 bool ShapedAppWindowTargeter::GetHitTestMask(aura::Window* window,
                                              gfx::Path* mask) const {
   SkRegion* shape = app_window_->shape();
-  return shape ? shape->getBoundaryPath(mask) : false;
+  if (!shape)
+    return false;
+
+  shape->getBoundaryPath(mask);
+  return true;
 }