Clean content_settings_pattern_parser.* from unnecessary dependencies.

chrome/browser/extensions/api/content_settings/content_settings_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/macros.h"
+#include "chrome/browser/extensions/api/content_settings/content_settings_helpers.h"
+#include "chrome/common/content_settings_component.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-#include "chrome/browser/extensions/api/content_settings/content_settings_helpers.h"
-
 namespace extensions {
 namespace helpers = content_settings_helpers;
 
 TEST(ExtensionContentSettingsHelpersTest, ParseExtensionPattern) {
+  InitContentSettingsComponent();
   const struct {
     const char* extension_pattern;
     const char* content_settings_pattern;
   } kTestPatterns[] = {
     { "<all_urls>", "*" },
     { "*://*.google.com/*", "[*.]google.com" },
     { "http://www.example.com/*", "http://www.example.com" },
     { "*://www.example.com/*", "www.example.com" },
     { "http://www.example.com:8080/*", "http://www.example.com:8080" },
     { "https://*/*", "https://*" },
@@ skipping 21 matching lines @@
     ContentSettingsPattern pattern = helpers::ParseExtensionPattern(
         kInvalidTestPatterns[i].extension_pattern, &error);
     EXPECT_FALSE(pattern.IsValid());
     EXPECT_EQ(kInvalidTestPatterns[i].expected_error, error)
         << "Unexpected error parsing "
         << kInvalidTestPatterns[i].extension_pattern;
   }
 }
 
 }  // namespace extensions