Require WebApp & WebAPK primary icons to have IconPurpose::ANY

chrome/browser/installable/installable_logging.cc

 // Copyright 2016 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/installable/installable_logging.h"
 
 #include "base/macros.h"
 #include "base/strings/stringprintf.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 22 matching lines @@
 static const char kManifestEmptyMessage[] =
     "the manifest could not be fetched, is empty, or could not be parsed";
 static const char kStartUrlNotValidMessage[] =
     "the start URL in manifest is not valid";
 static const char kManifestMissingNameOrShortNameMessage[] =
     "one of manifest name or short name must be specified";
 static const char kManifestDisplayNotSupportedMessage[] =
     "the manifest display property must be set to 'standalone' or 'fullscreen'";
 static const char kManifestMissingSuitableIconMessage[] =
     "the manifest does not contain a suitable icon - PNG format of at least "
-    "%spx is required, and the sizes attribute must be set";
+    "%spx is required, the sizes attribute must be set, and the purpose "
+    "attribute, if set, must include \"any\".";
 static const char kNoMatchingServiceWorkerMessage[] =
     "no matching service worker detected. You may need to reload the page, or "
     "check that the service worker for the current page also controls the "
     "start URL from the manifest";
 static const char kNoAcceptableIconMessage[] =
     "a %spx square icon is required, but no supplied icon meets this "
     "requirement";
 static const char kCannotDownloadIconMessage[] =
     "could not download the specified icon";
 static const char kNoIconAvailableMessage[] =
@@ skipping 98 matching lines @@
       break;
   }
 
   if (!pattern)
     return;
   std::string message = param.empty() ?
       pattern : base::StringPrintf(pattern, param.c_str());
   web_contents->GetMainFrame()->AddMessageToConsole(
       severity, GetMessagePrefix() + message);
 }