Disable NativeMessagingTest.EchoConnect - it hangs unit_tests bots.

chrome/browser/extensions/api/messaging/native_message_process_host_unittest_posix.cc

 // Copyright (c) 2012 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.
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 138 matching lines @@
       launcher);
   message_loop_.RunAllPending();
   ASSERT_TRUE(native_message_process_host_);
 
   EXPECT_TRUE(file_util::ContentsEqual(
       temp_file, GetTestDir().AppendASCII("single_message_request.msg")));
 
   file_util::Delete(temp_file, false /* non-recursive */);
 }
 
+// Disabled, see http://crbug.com/159754.
 // Test send message with a real client. The client just echo's back the text
 // it recieved.
-TEST_F(NativeMessagingTest, EchoConnect) {
+TEST_F(NativeMessagingTest, DISABLED_EchoConnect) {
   NativeMessageProcessHost::Create(
       AsWeakPtr(), "echo.py", "{\"text\": \"Hello.\"}", 0,
       NativeMessageProcessHost::TYPE_CONNECT, base::Bind(
           &NativeMessagingTest::AcquireProcess, AsWeakPtr()));
   message_loop_.RunAllPending();
   ASSERT_TRUE(native_message_process_host_);
 
   native_message_process_host_->ReadNowForTesting();
   message_loop_.RunAllPending();
   EXPECT_EQ(last_posted_message_,
             "{\"id\": 1, \"echo\": {\"text\": \"Hello.\"}}");
 
   native_message_process_host_->Send("{\"foo\": \"bar\"}");
   message_loop_.RunAllPending();
   native_message_process_host_->ReadNowForTesting();
   message_loop_.RunAllPending();
   EXPECT_EQ(last_posted_message_, "{\"id\": 2, \"echo\": {\"foo\": \"bar\"}}");
 }
 
 }  // namespace extensions