[heap] Fix unittest compilation on mips

BUG=
TBR=hpayer@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2587363002
Cr-Commit-Position: refs/heads/master@{#41841}

test/unittests/heap/embedder-tracing-unittest.cc

@@ -136,9 +136,7 @@ TEST(LocalEmbedderHeapTracer, TraceFinishes) {
   EXPECT_EQ(1u, local_tracer.NumberOfCachedWrappersToTrace());
   EXPECT_CALL(remote_tracer, RegisterV8References(_));
   EXPECT_CALL(remote_tracer, AdvanceTracing(0, _)).WillOnce(Return(false));
-  EXPECT_EQ(
-      false,
-      local_tracer.Trace(
+  EXPECT_FALSE(local_tracer.Trace(
       0, EmbedderHeapTracer::AdvanceTracingActions(
              EmbedderHeapTracer::ForceCompletionAction::FORCE_COMPLETION)));
   EXPECT_EQ(0u, local_tracer.NumberOfCachedWrappersToTrace());
@@ -152,9 +150,7 @@ TEST(LocalEmbedderHeapTracer, TraceDoesNotFinish) {
   EXPECT_EQ(1u, local_tracer.NumberOfCachedWrappersToTrace());
   EXPECT_CALL(remote_tracer, RegisterV8References(_));
   EXPECT_CALL(remote_tracer, AdvanceTracing(0, _)).WillOnce(Return(true));
-  EXPECT_EQ(
-      true,
-      local_tracer.Trace(
+  EXPECT_TRUE(local_tracer.Trace(
       0, EmbedderHeapTracer::AdvanceTracingActions(
              EmbedderHeapTracer::ForceCompletionAction::FORCE_COMPLETION)));
   EXPECT_EQ(0u, local_tracer.NumberOfCachedWrappersToTrace());