Created min size for print preview dialog and modified to allow the

ui/wm/core/window_modality_controller.cc

Index: ui/wm/core/window_modality_controller.cc
diff --git a/ui/wm/core/window_modality_controller.cc b/ui/wm/core/window_modality_controller.cc
index 094acc49189b86f2d21d4dbade56e7b8b7e1486d..51bd566b4f8c8758c5b8b5ed645364b187fa3444 100644
--- a/ui/wm/core/window_modality_controller.cc
+++ b/ui/wm/core/window_modality_controller.cc
@@ -23,6 +23,8 @@
 
 namespace wm {
 
+const char kAllowTransientParentEventsKey[] = "__ALLOW_PARENT_EVENTS__";
+
 // Transient child's modal parent.
 extern const aura::WindowProperty<aura::Window*>* const kModalParentKey;
 DEFINE_WINDOW_PROPERTY_KEY(aura::Window*, kModalParentKey, NULL);
@@ -54,11 +56,21 @@ aura::Window* GetModalParent(aura::Window* window) {
 }
 
 bool IsModalTransientChild(aura::Window* transient, aura::Window* original) {
+  return (transient->IsVisible() &&
+         ((TransientChildIsWindowModal(transient) &&
+           !transient->GetNativeWindowProperty(kAllowTransientParentEventsKey))
+          || TransientChildIsSystemModal(transient)
+          || ((TransientChildIsChildModal(transient) ||
+            transient->GetNativeWindowProperty(kAllowTransientParentEventsKey))
+              && (HasAncestor(original, GetModalParent(transient))))));
+}
+
+bool IsModalTransientChildOld(aura::Window* transient, aura::Window* original) {
   return transient->IsVisible() &&
-      (TransientChildIsWindowModal(transient) ||
-       TransientChildIsSystemModal(transient) ||
-       (TransientChildIsChildModal(transient) &&
-        (HasAncestor(original, GetModalParent(transient)))));
+         (TransientChildIsWindowModal(transient) ||
+          TransientChildIsSystemModal(transient) ||
+          (TransientChildIsChildModal(transient) &&
+           (HasAncestor(original, GetModalParent(transient)))));
 }
 
 aura::Window* GetModalTransientChild(
@@ -80,6 +92,26 @@ aura::Window* GetModalTransientChild(
   return NULL;
 }
 
+aura::Window* GetModalTransientChildOld(
+    aura::Window* activatable,
+    aura::Window* original) {
+  for (aura::Window::Windows::const_iterator it =
+           GetTransientChildren(activatable).begin();
+       it != GetTransientChildren(activatable).end();
+       ++it) {
+    aura::Window* transient = *it;
+    if (IsModalTransientChildOld(transient, original)) {
+      if (GetTransientChildren(transient).empty())
+        return transient;
+
+      aura::Window* modal_child =
+          GetModalTransientChildOld(transient, original);
+      return modal_child ? modal_child : transient;
+    }
+  }
+  return NULL;
+}
+
 }  // namespace
 
 void SetModalParent(aura::Window* child, aura::Window* parent) {
@@ -98,6 +130,17 @@ aura::Window* GetModalTransient(aura::Window* window) {
   return GetModalTransientChild(toplevel, window);
 }
 
+aura::Window* HasWindowModalTransient(aura::Window* window) {
+  if (!window)
+    return NULL;
+
+  aura::Window* toplevel = GetToplevelWindow(window);
+  if (!toplevel)
+    return NULL;
+
+  return GetModalTransientChildOld(toplevel, window);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // WindowModalityController, public:
 
@@ -128,7 +171,7 @@ void WindowModalityController::OnKeyEvent(ui::KeyEvent* event) {
 void WindowModalityController::OnMouseEvent(ui::MouseEvent* event) {
   aura::Window* target = static_cast<aura::Window*>(event->target());
   if (ProcessLocatedEvent(target, event))
-   event->SetHandled();
+    event->SetHandled();
 }
 
 void WindowModalityController::OnTouchEvent(ui::TouchEvent* event) {
@@ -172,8 +215,11 @@ void WindowModalityController::OnWindowVisibilityChanged(
     aura::Window* capture_window = aura::client::GetCaptureWindow(window);
     if (capture_window) {
       bool should_release_capture = true;
-      if (window->GetProperty(aura::client::kModalKey) ==
-              ui::MODAL_TYPE_CHILD &&
+      if (((window->GetProperty(aura::client::kModalKey) ==
+              ui::MODAL_TYPE_CHILD) ||
+           (window->GetProperty(aura::client::kModalKey) ==
+              ui::MODAL_TYPE_WINDOW &&
+           window->GetNativeWindowProperty(kAllowTransientParentEventsKey))) &&
           !HasAncestor(capture_window, GetModalParent(window))) {
         // For child modal windows we only need ensure capture is not on a
         // descendant of the modal parent. This way we block events to the
@@ -200,7 +246,9 @@ bool WindowModalityController::ProcessLocatedEvent(aura::Window* target,
   if (modal_transient_child && (event->type() == ui::ET_MOUSE_PRESSED ||
                                 event->type() == ui::ET_TOUCH_PRESSED)) {
     // Activate top window if transient child window is window modal.
-    if (TransientChildIsWindowModal(modal_transient_child)) {
+    if (TransientChildIsWindowModal(modal_transient_child) &&
+        !modal_transient_child->GetNativeWindowProperty(
+            kAllowTransientParentEventsKey)) {
       aura::Window* toplevel = GetToplevelWindow(target);
       DCHECK(toplevel);
       ActivateWindow(toplevel);