Move the rest of extension_manifest_constants to top-level extensions/

chrome/common/extensions/api/extension_action/browser_action_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 "chrome/common/extensions/api/extension_action/action_info.h"
 #include "chrome/common/extensions/extension_builder.h"
 #include "chrome/common/extensions/extension_icon_set.h"
-#include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "chrome/common/extensions/value_builder.h"
 #include "extensions/common/error_utils.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;
+
 namespace {
 
 class BrowserActionManifestTest : public ExtensionManifestTest {
 };
 
 TEST_F(BrowserActionManifestTest,
        BrowserActionManifestIcons_NoDefaultIcons) {
   scoped_refptr<const Extension> extension =
       ExtensionBuilder()
       .SetManifest(DictionaryBuilder()
@@ skipping 76 matching lines @@
                    .Set("24", "icon24.png").Set("38", "icon38.png"))).Build();
 
   string16 error = ErrorUtils::FormatErrorMessageUTF16(
       errors::kInvalidIconPath, "19");
   LoadAndExpectError(Manifest(manifest_value.get(), "Invalid default icon"),
                      errors::kInvalidIconPath);
 }
 
 }  // namespace
 }  // namespace extensions