Move shelf item tooltip flag from delegate to item.

chrome/browser/ui/ash/launcher/browser_shortcut_launcher_item_controller.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 "chrome/browser/ui/ash/launcher/browser_shortcut_launcher_item_controller.h"
 
 #include <vector>
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/shelf/shelf_delegate.h"
@@ skipping 220 matching lines @@
 }
 
 bool BrowserShortcutLauncherItemController::IsDraggable() {
   return true;
 }
 
 bool BrowserShortcutLauncherItemController::CanPin() const {
   return true;
 }
 
-bool BrowserShortcutLauncherItemController::ShouldShowTooltip() {
-  return true;
-}
-
 bool BrowserShortcutLauncherItemController::IsListOfActiveBrowserEmpty() {
   return GetListOfActiveBrowsers().empty();
 }
 
 gfx::Image BrowserShortcutLauncherItemController::GetBrowserListIcon(
     content::WebContents* web_contents) const {
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   return rb.GetImageNamed(IsIncognito(web_contents) ?
       IDR_ASH_SHELF_LIST_INCOGNITO_BROWSER :
       IDR_ASH_SHELF_LIST_BROWSER);
@@ skipping 94 matching lines @@
         !browser->window()->IsMinimized()) {
       continue;
     }
     if (!IsBrowserRepresentedInBrowserList(browser) &&
         !browser->is_type_tabbed())
       continue;
     active_browsers.push_back(browser);
   }
   return active_browsers;
 }