Mojo: Increase epsilon in tests.

mojo/system/message_pipe_dispatcher_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // NOTE(vtl): Some of these tests are inherently flaky (e.g., if run on a
 // heavily-loaded system). Sorry. |kEpsilonMicros| may be increased to increase
 // tolerance and reduce observed flakiness.
 
 #include "mojo/system/message_pipe_dispatcher.h"
 
@@ skipping 11 matching lines @@
 #include "mojo/system/test_utils.h"
 #include "mojo/system/waiter.h"
 #include "mojo/system/waiter_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace system {
 namespace {
 
 const int64_t kMicrosPerMs = 1000;
-const int64_t kEpsilonMicros = 15 * kMicrosPerMs;  // 15 ms.
+const int64_t kEpsilonMicros = 30 * kMicrosPerMs;  // 30 ms.
 
 TEST(MessagePipeDispatcherTest, Basic) {
   test::Stopwatch stopwatch;
   int32_t buffer[1];
   const uint32_t kBufferSize = static_cast<uint32_t>(sizeof(buffer));
   uint32_t buffer_size;
   int64_t elapsed_micros;
 
   // Run this test both with |d0| as port 0, |d1| as port 1 and vice versa.
   for (unsigned i = 0; i < 2; i++) {
@@ skipping 535 matching lines @@
   EXPECT_EQ(total_messages_written, total_messages_read);
   EXPECT_EQ(total_bytes_written, total_bytes_read);
 
   EXPECT_EQ(MOJO_RESULT_OK, d_write->Close());
   EXPECT_EQ(MOJO_RESULT_OK, d_read->Close());
 }
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo