Add related_applications field to manifest parser.

content/browser/manifest/manifest_manager_host.cc

 // Copyright 2014 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 "content/browser/manifest/manifest_manager_host.h"
 
 #include "content/common/manifest_manager_messages.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/manifest.h"
@@ skipping 109 matching lines @@
       manifest.icons[i].src = GURL();
     manifest.icons[i].type = base::NullableString16(
         manifest.icons[i].type.string().substr(0,
                                                Manifest::kMaxIPCStringLength),
         manifest.icons[i].type.is_null());
   }
   manifest.gcm_sender_id = base::NullableString16(
         manifest.gcm_sender_id.string().substr(
             0, Manifest::kMaxIPCStringLength),
         manifest.gcm_sender_id.is_null());
+  for (size_t i = 0; i < manifest.chrome_related_applications.size(); ++i) {

[mlamouri (slow - plz ping), 2015/02/17 12:43:20]

nit: maybe that would be easier to read:
  for (ChromeRelatedApplication& application :
manifest.chrome_related_applications) {
    ...
  }

+    manifest.chrome_related_applications[i].id= base::NullableString16(
+        manifest.chrome_related_applications[i].id.string().substr(
+            0,
+            Manifest::kMaxIPCStringLength),
+        manifest.chrome_related_applications[i].id.is_null());
+  }
 
   callback->Run(manifest);
   callbacks->Remove(request_id);
   if (callbacks->IsEmpty()) {
     delete callbacks;
     pending_callbacks_.erase(render_frame_host);
   }
 }
 
 } // namespace content