Abstract history dependencies on bookmarks through HistoryClient

components/history.gypi

Index: components/history.gypi
diff --git a/components/history.gypi b/components/history.gypi
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+# 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'history_core_browser',
+      'type': 'static_library',
+      'include_dirs': [
+        '..',
+      ],
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../url/url.gyp:url_lib',
+      ],
+      'sources': [
+        'history/core/browser/history_client.h',
+      ],
+    },
+    {
+      'target_name': 'history_core_test_support',
+      'type': 'static_library',
+      'include_dirs': [
+        '..',
+      ],
+      'dependencies': [
+        'history_core_browser',
+        '../base/base.gyp:base',
+        '../url/url.gyp:url_lib',
+      ],
+      'sources': [
+        'history/core/browser/test_history_client.cc',
+        'history/core/browser/test_history_client.h',
+      ],
+    },
+  ],
+}