[Media Router Action] Update icon tooltip text.

chrome/browser/ui/toolbar/media_router_action.cc

 // Copyright 2015 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/toolbar/media_router_action.h"
 
 #include "base/metrics/user_metrics.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/media/router/issue.h"
 #include "chrome/browser/media/router/media_route.h"
@@ skipping 86 matching lines @@
   return l10n_util::GetStringUTF16(IDS_MEDIA_ROUTER_TITLE);
 }
 
 base::string16 MediaRouterAction::GetAccessibleName(
     content::WebContents* web_contents) const {
   return GetTooltip(web_contents);
 }
 
 base::string16 MediaRouterAction::GetTooltip(
     content::WebContents* web_contents) const {
-  return l10n_util::GetStringUTF16(IDS_MEDIA_ROUTER_SHARE_YOUR_SCREEN_TEXT);
+  return l10n_util::GetStringUTF16(IDS_MEDIA_ROUTER_ICON_TOOLTIP_TEXT);
 }
 
 bool MediaRouterAction::IsEnabled(
     content::WebContents* web_contents) const {
   return true;
 }
 
 bool MediaRouterAction::WantsToRun(
     content::WebContents* web_contents) const {
   return false;
@@ skipping 130 matching lines @@
   if (issue_) {
     if (issue_->severity() == media_router::Issue::FATAL)
       return &media_router_error_icon_;
     if (issue_->severity() == media_router::Issue::WARNING)
       return &media_router_warning_icon_;
   }
 
   return has_local_display_route_ ? &media_router_active_icon_
                                   : &media_router_idle_icon_;
 }