[ash-md] Makes sure that minimized windows can be activated in overview

ash/common/wm/overview/scoped_transform_overview_window.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/common/wm/overview/scoped_transform_overview_window.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/common/wm/overview/scoped_overview_animation_settings.h"
@@ skipping 427 matching lines @@
 void ScopedTransformOverviewWindow::SetImmediateCloseForTests() {
   immediate_close_for_tests = true;
 }
 
 WmWindow* ScopedTransformOverviewWindow::GetOverviewWindow() const {
   if (minimized_widget_)
     return GetOverviewWindowForMinimizedState();
   return window_;
 }
 
+void ScopedTransformOverviewWindow::EnsureVisible() {
+  original_opacity_ = 1.f;
+}
+
 void ScopedTransformOverviewWindow::OnGestureEvent(ui::GestureEvent* event) {
   if (event->type() == ui::ET_GESTURE_TAP) {
+    EnsureVisible();
     window_->Show();
     window_->Activate();
   }
 }
 
 void ScopedTransformOverviewWindow::OnMouseEvent(ui::MouseEvent* event) {
   if (event->type() == ui::ET_MOUSE_PRESSED && event->IsOnlyLeftMouseButton()) {
+    EnsureVisible();
     window_->Show();
     window_->Activate();
   }
 }
 
 WmWindow* ScopedTransformOverviewWindow::GetOverviewWindowForMinimizedState()
     const {
   return minimized_widget_
              ? WmLookup::Get()->GetWindowForWidget(minimized_widget_.get())
              : nullptr;
@@ skipping 26 matching lines @@
   // In unit tests, the content view can have empty size.
   if (!preferred.IsEmpty()) {
     int inset = bounds.height() - preferred.height();
     bounds.Inset(0, 0, 0, inset);
   }
   minimized_widget_->SetBounds(bounds);
   minimized_widget_->Show();
 }
 
 }  // namespace ash