Add the layout test case of ash/popup_message.

ash/popup_message.cc

 // Copyright (c) 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/popup_message.h"
 
 #include "ash/wm/window_animations.h"
 #include "grit/ash_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/geometry/insets.h"
@@ skipping 45 matching lines @@
   // views::View overrides:
   gfx::Size GetPreferredSize() const override;
 
   // Each component (width/height) can force a size override for that component
   // if not 0.
   gfx::Size size_override_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageBubble);
 };
 
+// static
+const int PopupMessage::kCaptionLabelID = 1000;
+const int PopupMessage::kMessageLabelID = 1001;
+
 PopupMessage::MessageBubble::MessageBubble(const base::string16& caption,
                                            const base::string16& message,
                                            IconType message_type,
                                            views::View* anchor,
                                            views::BubbleBorder::Arrow arrow,
                                            const gfx::Size& size_override,
                                            int arrow_offset)
     : views::BubbleDelegateView(anchor, arrow),
       size_override_(size_override) {
   gfx::Insets insets = gfx::Insets(kArrowOffsetTopBottom,
@@ skipping 45 matching lines @@
 
   // Create a container for the text items and use it as second column.
   views::View* details = new views::View();
   AddChildView(details);
   details->SetLayoutManager(new views::BoxLayout(
       views::BoxLayout::kVertical, 0, 0, kVerticalPopupPaddingBetweenItems));
 
   // The caption label.
   if (!caption.empty()) {
     views::Label* caption_label = new views::Label(caption);
+    caption_label->set_id(kCaptionLabelID);
     caption_label->SetMultiLine(true);
     caption_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
     caption_label->SetFontList(
         bundle.GetFontList(ui::ResourceBundle::BoldFont));
     caption_label->SetEnabledColor(kMessageTextColor);
     details->AddChildView(caption_label);
   }
 
   // The message label.
   if (!message.empty()) {
     views::Label* message_label = new views::Label(message);
+    message_label->set_id(kMessageLabelID);
     message_label->SetMultiLine(true);
     message_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
     message_label->SetEnabledColor(kMessageTextColor);
     details->AddChildView(message_label);
   }
   views::BubbleDelegateView::CreateBubble(this);
 
   // Change the arrow offset if needed.
   if (arrow_offset) {
     // With the creation of the bubble, the bubble got already placed (and
@@ skipping 65 matching lines @@
 void PopupMessage::CancelHidingAnimation() {
   if (!widget_ || !widget_->GetNativeView())
     return;
 
   gfx::NativeView native_view = widget_->GetNativeView();
   wm::SetWindowVisibilityAnimationTransition(
       native_view, wm::ANIMATE_NONE);
 }
 
 }  // namespace ash