Allow manifest handlers to declare keys they depend on that must be parsed before them.

chrome/common/extensions/manifest_tests/extension_manifest_test.h

 // 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_MANIFEST_TESTS_EXTENSION_MANIFEST_TEST_H_
 #define CHROME_COMMON_EXTENSIONS_MANIFEST_TESTS_EXTENSION_MANIFEST_TEST_H_
 
 #include "base/values.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/features/feature.h"
 #include "chrome/common/extensions/manifest.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-namespace errors = extension_manifest_errors;
-namespace keys = extension_manifest_keys;
-
 class ExtensionManifestTest : public testing::Test {
  public:
   ExtensionManifestTest();
 
  protected:
+  virtual void SetUp() OVERRIDE;
+
   // If filename is a relative path, LoadManifestFile will treat it relative to
   // the appropriate test directory.
   static DictionaryValue* LoadManifestFile(const std::string& filename,
                                            std::string* error);
 
   // Helper class that simplifies creating methods that take either a filename
   // to a manifest or the manifest itself.
   class Manifest {
    public:
     explicit Manifest(const char* name);
@@ skipping 108 matching lines @@
   // Force the manifest tests to run as though they are on trunk, since several
   // tests rely on manifest features being available that aren't on
   // stable/beta.
   //
   // These objects nest, so if a test wants to explicitly test the behaviour
   // on stable or beta, declare it inside that test.
   extensions::Feature::ScopedCurrentChannel current_channel_;
 };
 
 #endif  // CHROME_COMMON_EXTENSIONS_MANIFEST_TESTS_EXTENSION_MANIFEST_TEST_H_