Break dependency of chrome.gyp:common on content.gyp:content_browser.

components/policy/policy_browser.gypi

+# 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.
+
+{
+  'dependencies': [
+    '../base/base.gyp:base',
+    '../base/base.gyp:base_prefs',
+    '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
+    '../net/net.gyp:net',
+    '../ui/ui.gyp:ui',
+    '../url/url.gyp:url_lib',
+    'component_strings.gyp:component_strings',
+    'user_prefs',
+  ],
+  'defines': [
+    'POLICY_COMPONENT_IMPLEMENTATION',
+  ],
+  'include_dirs': [
+    '..',
+  ],
+  'sources': [
+    # Note that these sources are always included, even for builds that
+    # disable policy. Most source files should go in the conditional
+    # sources list below.
+    # url_blacklist_manager.h is used by managed mode.
+    'core/browser/url_blacklist_manager.cc',
+    'core/browser/url_blacklist_manager.h',
+  ],
+  'conditions': [
+    ['configuration_policy==1', {
+      'dependencies': [
+        'cloud_policy_proto',
+        'url_matcher',
+      ],
+      'sources': [
+        'core/browser/cloud/message_util.cc',
+        'core/browser/cloud/message_util.h',
+        'core/browser/configuration_policy_handler.cc',
+        'core/browser/configuration_policy_handler.h',
+        'core/browser/configuration_policy_handler_list.cc',
+        'core/browser/configuration_policy_handler_list.h',
+        'core/browser/configuration_policy_pref_store.cc',
+        'core/browser/configuration_policy_pref_store.h',
+        'core/browser/policy_error_map.cc',
+        'core/browser/policy_error_map.h',
+      ],
+    }],
+  ],
+}