Make javascript dialogs into top-level windows.

ui/views/win/hwnd_util_aurawin.cc

Index: ui/views/win/hwnd_util_aurawin.cc
diff --git a/ui/views/win/hwnd_util_aurawin.cc b/ui/views/win/hwnd_util_aurawin.cc
index fa88c2d0ad07793cf7b94bbc14b96a0e1ce3adfa..a8f68218f3fb542e2ac3dcbd746984acc9286b40 100644
--- a/ui/views/win/hwnd_util_aurawin.cc
+++ b/ui/views/win/hwnd_util_aurawin.cc
@@ -27,4 +27,20 @@ HWND HWNDForNativeWindow(gfx::NativeWindow window) {
       window->GetRootWindow()->GetAcceleratedWidget() : NULL;
 }
 
+gfx::Rect GetWindowBoundsForClientBounds(View* view,
+                                         const gfx::Rect& client_bounds) {
+  DCHECK(view);
+  aura::RootWindow* window =
+      view->GetWidget()->GetNativeWindow()->GetRootWindow();
+  if (window) {
+    HWND hwnd = window->GetAcceleratedWidget();
+    RECT rect = client_bounds.ToRECT();
+    DWORD style = ::GetWindowLong(hwnd, GWL_STYLE);
+    DWORD ex_style = ::GetWindowLong(hwnd, GWL_EXSTYLE);
+    AdjustWindowRectEx(&rect, style, FALSE, ex_style);
+    return gfx::Rect(rect);
+  }
+  return client_bounds;
 }
+
+}  // namespace views