Use apple-touch-icons for streamlined hosted apps.

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 <string>
 #include <vector>
 
+#include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/web_application_info.h"
 #include "grit/common_resources.h"
 #include "grit/generated_resources.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebNode.h"
 #include "third_party/WebKit/public/web/WebNodeList.h"
@@ skipping 111 matching lines @@
     if (!child.isElementNode())
       continue;
     WebElement elem = child.to<WebElement>();
 
     if (elem.hasTagName("link")) {
       std::string rel = elem.getAttribute("rel").utf8();
       // "rel" attribute may use either "icon" or "shortcut icon".
       // see also
       //   <http://en.wikipedia.org/wiki/Favicon>
       //   <http://dev.w3.org/html5/spec/Overview.html#rel-icon>
+      //
+      // Streamlined Hosted Apps also support "apple-touch-icon" and
+      // "apple-touch-icon-precomposed".
       if (LowerCaseEqualsASCII(rel, "icon") ||
-          LowerCaseEqualsASCII(rel, "shortcut icon")) {
+          LowerCaseEqualsASCII(rel, "shortcut icon") ||
+          (CommandLine::ForCurrentProcess()->
+              HasSwitch(switches::kEnableStreamlinedHostedApps) &&
+            (LowerCaseEqualsASCII(rel, "apple-touch-icon") ||
+             LowerCaseEqualsASCII(rel, "apple-touch-icon-precomposed")))) {
         AddInstallIcon(elem, &app_info->icons);
       }
     } else if (elem.hasTagName("meta") && elem.hasAttribute("name")) {
       std::string name = elem.getAttribute("name").utf8();
       WebString content = elem.getAttribute("content");
       if (name == "application-name") {
         app_info->title = content;
       } else if (name == "description") {
         app_info->description = content;
       } 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();
       }
     }
   }
 
   return true;
 }
 
 }  // namespace web_apps