App Banner: require 'display' to be set to 'standalone' or 'fullscreen'.

chrome/browser/banners/app_banner_data_fetcher.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/banners/app_banner_data_fetcher.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/banners/app_banner_debug_log.h"
 #include "chrome/browser/banners/app_banner_metrics.h"
 #include "chrome/browser/banners/app_banner_settings_helper.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/manifest/manifest_icon_downloader.h"
 #include "chrome/browser/manifest/manifest_icon_selector.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/render_messages.h"
 #include "components/rappor/rappor_utils.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/service_worker_context.h"
 #include "content/public/browser/storage_partition.h"
 #include "net/base/load_flags.h"
+#include "third_party/WebKit/public/platform/WebDisplayMode.h"
 #include "third_party/WebKit/public/platform/modules/app_banner/WebAppBannerPromptReply.h"
 #include "ui/gfx/screen.h"
 
 namespace {
 
 base::TimeDelta gTimeDeltaForTesting;
 int gCurrentRequestID = -1;
 const char kPngExtension[] = ".png";
 
 // The requirement for now is an image/png that is at least 144x144.
@@ skipping 404 matching lines @@
     bool is_debug_mode) {
   if (manifest.IsEmpty()) {
     OutputDeveloperNotShownMessage(web_contents, kManifestEmpty, is_debug_mode);
     return false;
   }
   if (!manifest.start_url.is_valid()) {
     OutputDeveloperNotShownMessage(web_contents, kStartURLNotValid,
                                    is_debug_mode);
     return false;
   }
-  if (manifest.name.is_null() && manifest.short_name.is_null()) {
+  if ((manifest.name.is_null() || manifest.name.string().empty()) &&
+      (manifest.short_name.is_null() || manifest.short_name.string().empty())) {
     OutputDeveloperNotShownMessage(
         web_contents, kManifestMissingNameOrShortName, is_debug_mode);
     return false;
   }
+
+  if (manifest.display != blink::WebDisplayModeStandalone &&
+      manifest.display != blink::WebDisplayModeFullscreen) {
+    OutputDeveloperNotShownMessage(
+        web_contents, kManifestDisplayStandaloneFullscreen, is_debug_mode);
+    return false;
+  }
+
   if (!DoesManifestContainRequiredIcon(manifest)) {
     OutputDeveloperNotShownMessage(web_contents, kManifestMissingSuitableIcon,
                                    is_debug_mode);
     return false;
   }
   return true;
 }
 
 }  // namespace banners