Use explicit WebString conversions in remaining chrome/renderer files

chrome/renderer/web_apps.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 "chrome/renderer/web_apps.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 149 matching lines @@
           base::LowerCaseEqualsASCII(rel, "shortcut icon") ||
           (bookmark_apps_enabled &&
            (base::LowerCaseEqualsASCII(rel, "apple-touch-icon") ||
             base::LowerCaseEqualsASCII(rel, "apple-touch-icon-precomposed")))) {
         AddInstallIcon(elem, &app_info->icons);
       }
     } else if (elem.hasHTMLTagName("meta") && elem.hasAttribute("name")) {
       std::string name = elem.getAttribute("name").utf8();
       WebString content = elem.getAttribute("content");
       if (name == "application-name") {
-        app_info->title = content;
+        app_info->title = content.utf16();
       } else if (name == "description") {
-        app_info->description = content;
+        app_info->description = content.utf16();
       } else if (name == "application-url") {
         std::string url = content.utf8();
         app_info->app_url = document_url.is_valid() ?
             document_url.Resolve(url) : GURL(url);
         if (!app_info->app_url.is_valid())
           app_info->app_url = GURL();
       } else if (name == "mobile-web-app-capable" &&
-                 base::LowerCaseEqualsASCII(base::StringPiece16(content),
-                                            "yes")) {
+                 base::LowerCaseEqualsASCII(content.utf16(), "yes")) {
         app_info->mobile_capable = WebApplicationInfo::MOBILE_CAPABLE;
       } else if (name == "apple-mobile-web-app-capable" &&
-                 base::LowerCaseEqualsASCII(
-                     base::StringPiece16(content), "yes") &&
+                 base::LowerCaseEqualsASCII(content.utf16(), "yes") &&
                  app_info->mobile_capable ==
                      WebApplicationInfo::MOBILE_CAPABLE_UNSPECIFIED) {
         app_info->mobile_capable = WebApplicationInfo::MOBILE_CAPABLE_APPLE;
       }
     }
   }
 }
 
 }  // namespace web_apps