fix gcc 4.7 compilation errors in base_unittests

base/logging_unittest.cc

Index: base/logging_unittest.cc
diff --git a/base/logging_unittest.cc b/base/logging_unittest.cc
index 760cc24bc3fcde295174c1fd968c0ba91ded4dad..10517a50f29d2734c882cf2cd31c82184c87d4a6 100644
--- a/base/logging_unittest.cc
+++ b/base/logging_unittest.cc
@@ -65,7 +65,7 @@ TEST_F(LoggingTest, BasicLogging) {
   // As of g++-4.5, the first argument to EXPECT_EQ cannot be a
   // constant expression.
   const bool kIsDebugMode = (DEBUG_MODE != 0);
-  EXPECT_EQ(kIsDebugMode, DLOG_IS_ON(INFO));
+  EXPECT_TRUE(kIsDebugMode == DLOG_IS_ON(INFO));
   EXPECT_TRUE(VLOG_IS_ON(0));
 
   LOG(INFO) << mock_log_source.Log();
@@ -120,7 +120,7 @@ TEST_F(LoggingTest, LogIsOn) {
   EXPECT_FALSE(LOG_IS_ON(ERROR));
   EXPECT_TRUE(LOG_IS_ON(ERROR_REPORT));
   EXPECT_TRUE(LOG_IS_ON(FATAL));
-  EXPECT_EQ(kDfatalIsFatal, LOG_IS_ON(DFATAL));
+  EXPECT_TRUE(kDfatalIsFatal == LOG_IS_ON(DFATAL));
 
   // LOG_IS_ON(ERROR_REPORT) should always be true.
   SetMinLogLevel(LOG_FATAL);
@@ -129,7 +129,7 @@ TEST_F(LoggingTest, LogIsOn) {
   EXPECT_FALSE(LOG_IS_ON(ERROR));
   EXPECT_TRUE(LOG_IS_ON(ERROR_REPORT));
   EXPECT_TRUE(LOG_IS_ON(FATAL));
-  EXPECT_EQ(kDfatalIsFatal, LOG_IS_ON(DFATAL));
+  EXPECT_TRUE(kDfatalIsFatal == LOG_IS_ON(DFATAL));
 
   // So should LOG_IS_ON(FATAL).
   SetMinLogLevel(LOG_FATAL + 1);
@@ -138,7 +138,7 @@ TEST_F(LoggingTest, LogIsOn) {
   EXPECT_FALSE(LOG_IS_ON(ERROR));
   EXPECT_TRUE(LOG_IS_ON(ERROR_REPORT));
   EXPECT_TRUE(LOG_IS_ON(FATAL));
-  EXPECT_EQ(kDfatalIsFatal, LOG_IS_ON(DFATAL));
+  EXPECT_TRUE(kDfatalIsFatal == LOG_IS_ON(DFATAL));
 }
 
 TEST_F(LoggingTest, LoggingIsLazy) {