Move the rest of extension_manifest_constants to top-level extensions/

chrome/common/extensions/manifest_tests/extension_manifests_sandboxed_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 "chrome/common/extensions/csp_handler.h"
-#include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
+#include "extensions/common/manifest_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-namespace errors = extension_manifest_errors;
+namespace extensions {
 
-namespace extensions {
+namespace errors = manifest_errors;
 
 class SandboxedPagesManifestTest : public ExtensionManifestTest {
 };
 
 TEST_F(SandboxedPagesManifestTest, SandboxedPages) {
   // Sandboxed pages specified, no custom CSP value.
   scoped_refptr<Extension> extension1(
       LoadAndExpectSuccess("sandboxed_pages_valid_1.json"));
 
   // No sandboxed pages.
@@ skipping 53 matching lines @@
     Testcase("sandboxed_pages_invalid_4.json",
         errors::kInvalidSandboxedPagesCSP),
     Testcase("sandboxed_pages_invalid_5.json",
         errors::kInvalidSandboxedPagesCSP)
   };
   RunTestcases(testcases, arraysize(testcases),
                EXPECT_TYPE_ERROR);
 }
 
 }  // namespace extensions