[turbofan] Remove stale TODO from FunctionTester.

test/cctest/compiler/function-tester.h

Index: test/cctest/compiler/function-tester.h
diff --git a/test/cctest/compiler/function-tester.h b/test/cctest/compiler/function-tester.h
index 3881f09c47faa6895a7a17487f36c055c1c03620..56dc0a9e732beb1b68f74e6aa3d25e1985a05c3f 100644
--- a/test/cctest/compiler/function-tester.h
+++ b/test/cctest/compiler/function-tester.h
@@ -61,7 +61,6 @@ class FunctionTester : public InitializedHandleScope {
     CHECK(isolate->has_pending_exception());
     CHECK(try_catch.HasCaught());
     CHECK(no_result.is_null());
-    // TODO(mstarzinger): Temporary workaround for issue chromium:362388.
     isolate->OptionalRescheduleException(true);
   }
 
@@ -72,10 +71,8 @@ class FunctionTester : public InitializedHandleScope {
     CHECK(isolate->has_pending_exception());
     CHECK(try_catch.HasCaught());
     CHECK(no_result.is_null());
-    // TODO(mstarzinger): Calling OptionalRescheduleException is a dirty hack,
-    // it's the only way to make Message() not to assert because an external
-    // exception has been caught by the try_catch.
     isolate->OptionalRescheduleException(true);
+    CHECK(!try_catch.Message().IsEmpty());
     return try_catch.Message();
   }