Fix unit_tests build on Fedora 20.

chrome/browser/extensions/extension_pref_value_map_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/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_store_observer_mock.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_pref_value_map.h"
@@ skipping 188 matching lines @@
   epvm_.UnregisterExtension(kExt2);
 
   EXPECT_EQ("val3", GetValue(kPref1, false));
   EXPECT_EQ("val4", GetValue(kPref2, false));
   EXPECT_EQ("val6", GetValue(kPref3, false));
   EXPECT_EQ("", GetValue(kPref4, false));
 }
 
 // Tests triggering of notifications to registered observers.
 TEST_F(ExtensionPrefValueMapTest, NotifyWhenNeeded) {
-  using testing::_;
   using testing::Mock;
   using testing::StrEq;
 
   epvm_.RegisterExtension(kExt1, CreateTime(10), true);
 
   ExtensionPrefValueMapObserverMock observer;
   epvm_.AddObserver(&observer);
 
   EXPECT_CALL(observer, OnPrefValueChanged(std::string(kPref1)));
   epvm_.SetExtensionPref(kExt1, kPref1, kRegular, CreateVal("val1"));
@@ skipping 171 matching lines @@
         OverrideIncognitoTestCase(1, 0, 0, 0,  5, 0, 0, 0,  5, 5),
         OverrideIncognitoTestCase(1, 2, 3, 0,  5, 0, 0, 0,  5, 5),
         OverrideIncognitoTestCase(1, 0, 0, 0,  0, 6, 0, 0,  6, 1),
         OverrideIncognitoTestCase(1, 0, 3, 0,  5, 6, 0, 0,  6, 5),
         OverrideIncognitoTestCase(1, 0, 0, 4,  5, 6, 0, 0,  6, 5),
         OverrideIncognitoTestCase(1, 0, 0, 0,  0, 0, 7, 0,  1, 7),
         OverrideIncognitoTestCase(1, 2, 0, 0,  5, 0, 7, 0,  5, 7),
         OverrideIncognitoTestCase(1, 2, 0, 0,  5, 0, 0, 8,  5, 8),
         OverrideIncognitoTestCase(1, 2, 0, 0,  5, 0, 7, 8,  5, 8),
         OverrideIncognitoTestCase(1, 2, 3, 0,  0, 6, 7, 0,  6, 7)));