Fix flaky test runtime/vm/heap_profiler_test.cc

runtime/vm/heap_profiler_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 #include "vm/heap_profiler.h"
 #include "vm/growable_array.h"
 #include "vm/unit_test.h"
 
 namespace dart {
@@ skipping 79 matching lines @@
   EXPECT_EQ('.', array[i++]);
   EXPECT_EQ('0', array[i++]);
   EXPECT_EQ('.', array[i++]);
   EXPECT_EQ('1', array[i++]);
   EXPECT_EQ('\0', array[i++]);
   uint32_t size = Read32(&array, &i);
   EXPECT_EQ(8u, size);
   uint64_t hi = Read32(&array, &i);
   uint64_t lo = Read32(&array, &i);
   uint64_t time = (hi << 32) | lo;
-  EXPECT_GE(before, time);
-  EXPECT_LE(after, time);
+  EXPECT_LE(before, time);
+  EXPECT_GE(after, time);
   while (i != array.length()) {
     // Check tag
     uint8_t tag = Read8(&array, &i);
     EXPECT(IsTagValid(tag));
     // Check time diff
     uint32_t time_diff = Read32(&array, &i);
     EXPECT_LE(before, time + time_diff);
     EXPECT_GE(after, time + time_diff);
     // Check length diff
     uint32_t length = Read32(&array, &i);
     EXPECT_LE((intptr_t)length + i , array.length());
     // skip body
     i += length;
   }
 }
 
 }  // namespace dart