Make sure the non browser/non app widget is fully visible when created on ash

ash/wm/window_positioner.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/wm/window_positioner.h"
 
 #include "ash/ash_switches.h"
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
@@ skipping 265 matching lines @@
 bool WindowPositioner::DisableAutoPositioning(bool ignore) {
   bool old_state = disable_auto_positioning;
   disable_auto_positioning = ignore;
   return old_state;
 }
 
 // static
 void WindowPositioner::RearrangeVisibleWindowOnShow(
     aura::Window* added_window) {
   wm::WindowState* added_window_state = wm::GetWindowState(added_window);
+  if (!added_window->TargetVisibility())
+    return;
 
   if (!UseAutoWindowManager(added_window) ||
-      added_window_state->bounds_changed_by_user() ||
-      !added_window->TargetVisibility())
+      added_window_state->bounds_changed_by_user()) {
+    if (added_window_state->minimum_visibility()) {
+      // Guarante minimum visibility within the work area.
+      gfx::Rect work_area = GetWorkAreaForWindowInParent(added_window);
+      gfx::Rect bounds = added_window->bounds();
+      gfx::Rect new_bounds = bounds;
+      ash::wm::AdjustBoundsToEnsureMinimumWindowVisibility(work_area,
+                                                           &new_bounds);
+      if (new_bounds != bounds)
+        added_window->SetBounds(new_bounds);
+    }
     return;
+  }
   // Find a single open managed window.
   bool single_window;
   aura::Window* other_shown_window = GetReferenceWindow(
       added_window->GetRootWindow(), added_window, &single_window);
 
   if (!other_shown_window) {
     // It could be that this window is the first window joining the workspace.
     if (!WindowPositionCanBeManaged(added_window) || other_shown_window)
       return;
     // Since we might be going from 0 to 1 window, we have to arrange the new
@@ skipping 218 matching lines @@
   // If the alignment was pushing the window out of the screen, we ignore the
   // alignment for that call.
   if (abs(pos.right() - work_area.right()) < grid)
     x = work_area.right() - w;
   if (abs(pos.bottom() - work_area.bottom()) < grid)
     y = work_area.bottom() - h;
   return gfx::Rect(x, y, w, h);
 }
 
 }  // namespace ash