[turbofan] Remove stale TODO from FunctionTester.

test/cctest/compiler/function-tester.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CCTEST_COMPILER_FUNCTION_TESTER_H_
 #define V8_CCTEST_COMPILER_FUNCTION_TESTER_H_
 
 #include "src/v8.h"
 #include "test/cctest/cctest.h"
 
@@ skipping 43 matching lines @@
     Handle<Object> args[] = {a, b};
     return Execution::Call(isolate, function, undefined(), 2, args, false);
   }
 
   void CheckThrows(Handle<Object> a, Handle<Object> b) {
     TryCatch try_catch;
     MaybeHandle<Object> no_result = Call(a, b);
     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);
   }
 
   v8::Handle<v8::Message> CheckThrowsReturnMessage(Handle<Object> a,
                                                    Handle<Object> b) {
     TryCatch try_catch;
     MaybeHandle<Object> no_result = Call(a, b);
     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();
   }
 
   void CheckCall(Handle<Object> expected, Handle<Object> a, Handle<Object> b) {
     Handle<Object> result = Call(a, b).ToHandleChecked();
     CHECK(expected->SameValue(*result));
   }
 
   void CheckCall(Handle<Object> expected, Handle<Object> a) {
     CheckCall(expected, a, undefined());
@@ skipping 132 matching lines @@
     CHECK(!code.is_null());
     function->ReplaceCode(*code);
     return function;
   }
 };
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_CCTEST_COMPILER_FUNCTION_TESTER_H_