Revert "Fix a ton of compiler warnings."

base/field_trial_unittest.cc

 // Copyright (c) 2006-2009 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.
 
 // Test of FieldTrial class
 
 #include "base/field_trial.h"
 
 #include "base/string_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 142 matching lines @@
   // Create a second trial and winning group.
   FieldTrial* trial2 = new FieldTrial("xxx", 10);
   trial2->AppendGroup("yyyy", 10);
 
   FieldTrialList::StatesToString(&save_string);
   // We assume names are alphabetized... though this is not critical.
   EXPECT_EQ(save_string, "Some name/Winner/xxx/yyyy/");
 }
 
 TEST_F(FieldTrialTest, Restore) {
-  EXPECT_TRUE(NULL == FieldTrialList::Find("Some_name"));
-  EXPECT_TRUE(NULL == FieldTrialList::Find("xxx"));
+  EXPECT_EQ(NULL, FieldTrialList::Find("Some_name"));
+  EXPECT_EQ(NULL, FieldTrialList::Find("xxx"));
 
   FieldTrialList::StringAugmentsState("Some_name/Winner/xxx/yyyy/");
 
   FieldTrial* trial = FieldTrialList::Find("Some_name");
   ASSERT_NE(static_cast<FieldTrial*>(NULL), trial);
   EXPECT_EQ(trial->group_name(), "Winner");
   EXPECT_EQ(trial->name(), "Some_name");
 
   trial = FieldTrialList::Find("xxx");
   ASSERT_NE(static_cast<FieldTrial*>(NULL), trial);
@@ skipping 14 matching lines @@
   std::string save_string;
   FieldTrialList::StatesToString(&save_string);
   EXPECT_EQ("Some name/Winner/", save_string);
 
   // It is OK if we redundantly specify a winner.
   EXPECT_TRUE(FieldTrialList::StringAugmentsState(save_string));
 
   // But it is an error to try to change to a different winner.
   EXPECT_FALSE(FieldTrialList::StringAugmentsState("Some name/Loser/"));
 }