Remove service worker concepts from apps/extensions manifest parsing.

chrome/common/extensions/manifest_unittest.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 "extensions/common/manifest.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 
@@ skipping 141 matching lines @@
       &manifest, keys::kApp, new base::DictionaryValue());
   AssertType(manifest.get(), Manifest::TYPE_LEGACY_PACKAGED_APP);
 
   // Platform app with event page.
   MutateManifest(
       &manifest, keys::kPlatformAppBackground, new base::DictionaryValue());
   AssertType(manifest.get(), Manifest::TYPE_PLATFORM_APP);
   MutateManifest(
       &manifest, keys::kPlatformAppBackground, NULL);
 
-  // Platform app with service worker.
-  MutateManifest(
-      &manifest, keys::kPlatformAppServiceWorker, new base::DictionaryValue());
-  AssertType(manifest.get(), Manifest::TYPE_PLATFORM_APP);
-  MutateManifest(&manifest, keys::kPlatformAppServiceWorker, NULL);
-
   // Hosted app.
   MutateManifest(
       &manifest, keys::kWebURLs, new base::ListValue());
   AssertType(manifest.get(), Manifest::TYPE_HOSTED_APP);
   MutateManifest(
       &manifest, keys::kWebURLs, NULL);
   MutateManifest(
       &manifest, keys::kLaunchWebURL, new base::StringValue("foo"));
   AssertType(manifest.get(), Manifest::TYPE_HOSTED_APP);
   MutateManifest(
@@ skipping 40 matching lines @@
   EXPECT_FALSE(manifest->Get(keys::kPageAction, &output));
   MutateManifest(
       &manifest, keys::kPlatformAppBackground, NULL);
 
   // Platform apps also can't have a "Commands" key.
   EXPECT_FALSE(manifest->HasKey(keys::kCommands));
   EXPECT_FALSE(manifest->Get(keys::kCommands, &output));
 };
 
 }  // namespace extensions