Refactored the URLBlacklistManager to avoid chrome/ and content/ dependencies.

chrome/browser/policy/policy_helpers.h

Index: chrome/browser/policy/policy_helpers.h
diff --git a/chrome/browser/policy/policy_helpers.h b/chrome/browser/policy/policy_helpers.h
new file mode 100644
index 0000000000000000000000000000000000000000..0c967448f9cb10df55c203e0ae1af6ffcdfef453
--- /dev/null
+++ b/chrome/browser/policy/policy_helpers.h
@@ -0,0 +1,17 @@
+// Copyright 2013 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_BROWSER_POLICY_POLICY_HELPERS_H_
+#define CHROME_BROWSER_POLICY_POLICY_HELPERS_H_
+
+class GURL;
+
+namespace policy {
+
+// Returns true if |url| should never be blacklisted by policy.
+bool SkipBlacklistForURL(const GURL& url);
+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_POLICY_POLICY_HELPERS_H_