[Sync] Replaced ASSERT/EXPECT_TRUE/FALSE with expected/actual checks.

chrome/browser/sync/test/integration/sync_datatype_helper.cc

Index: chrome/browser/sync/test/integration/sync_datatype_helper.cc
diff --git a/chrome/browser/sync/test/integration/sync_datatype_helper.cc b/chrome/browser/sync/test/integration/sync_datatype_helper.cc
index b6a22429c18e7281ff4bba0ad7d8b063d054e8c0..be6a44d0d9cce9a5b18056fd7688521697d93d5b 100644
--- a/chrome/browser/sync/test/integration/sync_datatype_helper.cc
+++ b/chrome/browser/sync/test/integration/sync_datatype_helper.cc
@@ -16,13 +16,13 @@ static SyncTest* test = nullptr;
 namespace sync_datatype_helper {
 
 void AssociateWithTest(SyncTest* test) {
-  ASSERT_TRUE(test != nullptr) << "Cannot associate with null test.";
-  ASSERT_TRUE(::test == nullptr) << "Already associated with a test.";
+  ASSERT_NE(nullptr, test) << "Cannot associate with null test.";
+  ASSERT_EQ(nullptr, ::test) << "Already associated with a test.";
   ::test = test;
 }
 
 SyncTest* test() {
-  EXPECT_TRUE(::test != nullptr) << "Must call AssociateWithTest first.";
+  EXPECT_NE(nullptr, ::test) << "Must call AssociateWithTest first.";
   return ::test;
 }