Clean content_settings_pattern_parser.* from unnecessary dependencies.

chrome/common/chrome_content_settings_client.cc

Index: chrome/common/chrome_content_settings_client.cc
diff --git a/chrome/common/chrome_content_settings_client.cc b/chrome/common/chrome_content_settings_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..59cc3964c7dcf3133c2a89df84720e02058ac137
--- /dev/null
+++ b/chrome/common/chrome_content_settings_client.cc
@@ -0,0 +1,15 @@
+// Copyright 2014 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/chrome_content_settings_client.h"
+
+#include "extensions/common/constants.h"
+
+namespace content_settings {
+
+bool ChromeContentSettingsClient::IsExtensionScheme(const std::string& scheme) {
+  return scheme == extensions::kExtensionScheme;
+}
+
+}  // namespace content_settings