Naming more views and windows to simplify debugging.

ui/app_list/views/app_list_view.cc

 // Copyright (c) 2012 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 "ui/app_list/views/app_list_view.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 358 matching lines @@
 
 void AppListView::InitChildWidgets() {
   DCHECK(search_box_view_);
 
   // Create the search box widget.
   views::Widget::InitParams search_box_widget_params(
       views::Widget::InitParams::TYPE_CONTROL);
   search_box_widget_params.parent = GetWidget()->GetNativeView();
   search_box_widget_params.opacity =
       views::Widget::InitParams::TRANSLUCENT_WINDOW;
+  search_box_widget_params.name = "SearchBoxView";

[xiyuan, 2017/05/04 23:08:14]

nit: SearchBoxView -> SearchBoxWidget to avoid duplication with SearchBoxView ?

 
   // Create a widget for the SearchBoxView to live in. This allows the
   // SearchBoxView to be on top of the custom launcher page's WebContents
   // (otherwise the search box events will be captured by the WebContents).
   search_box_widget_ = new views::Widget;
   search_box_widget_->Init(search_box_widget_params);
   search_box_widget_->SetContentsView(search_box_view_);
 
   // The search box will not naturally receive focus by itself (because it is in
   // a separate widget). Create this SearchBoxFocusHost in the main widget to
   // forward the focus search into to the search box.
   search_box_focus_host_ = new SearchBoxFocusHost(search_box_widget_);
   AddChildView(search_box_focus_host_);
   search_box_widget_->SetFocusTraversableParentView(search_box_focus_host_);
   search_box_widget_->SetFocusTraversableParent(
       GetWidget()->GetFocusTraversable());
 
   // Mouse events on the search box shadow should not be captured.
   aura::Window* window = search_box_widget_->GetNativeWindow();
   window->SetEventTargeter(
       base::MakeUnique<SearchBoxWindowTargeter>(search_box_view_));
 
   app_list_main_view_->contents_view()->Layout();
 }
 
 void AppListView::InitializeFullscreen(gfx::NativeView parent,
                                        int initial_apps_page) {
-
   views::Widget* widget = new views::Widget;
   views::Widget::InitParams app_list_overlay_view_params(
       views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
 
   app_list_overlay_view_params.parent = parent;
   app_list_overlay_view_params.delegate = this;
   app_list_overlay_view_params.opacity =
       views::Widget::InitParams::TRANSLUCENT_WINDOW;
   app_list_overlay_view_params.bounds =
       display::Screen::GetScreen()->
@@ skipping 180 matching lines @@
     app_list_main_view_->SetVisible(true);
     // Refocus the search box. However, if the app list widget does not have
     // focus, it means another window has already taken focus, and we *must not*
     // focus the search box (or we would steal focus back into the app list).
     if (GetWidget()->IsActive())
       search_box_view_->search_box()->RequestFocus();
   }
 }
 
 }  // namespace app_list