Move Extension Location and Type enums to Manifest, and move InstallWarning to its own file.

chrome/browser/chromeos/extensions/file_browser_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 "base/string_number_conversions.h"
 #include "chrome/browser/chromeos/extensions/file_browser_handler.h"
 #include "chrome/common/extensions/extension_builder.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_handler.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
@@ skipping 187 matching lines @@
               .Set("files", "main.html"))
       .Build();
 
   // Non component extensions can't ovverride chrome://files/ URL.
   LoadAndExpectError(Manifest(manifest_value.get(), "override_files"),
                      errors::kInvalidChromeURLOverrides);
 
   // A component extention can override chrome://files/ URL.
   std::string error;
   LoadExtension(Manifest(manifest_value.get(), "override_files"),
-                &error, Extension::COMPONENT, Extension::NO_FLAGS);
+                &error, extensions::Manifest::COMPONENT, Extension::NO_FLAGS);
 #if defined(FILE_MANAGER_EXTENSION)
   EXPECT_EQ("", error);
 #else
   EXPECT_EQ(std::string(errors::kInvalidChromeURLOverrides), error);
 #endif
 }
 
 }  // namespace