Get rid of multiprocess_test's debug_on_start arguments.

mojo/common/test/multiprocess_test_helper.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.
 
 #include "mojo/common/test/multiprocess_test_helper.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/process/kill.h"
 #include "base/process/process_handle.h"
@@ skipping 30 matching lines @@
   base::LaunchOptions options;
 #if defined(OS_POSIX)
   options.fds_to_remap = &handle_passing_info;
 #elif defined(OS_WIN)
   options.start_hidden = true;
   options.handles_to_inherit = &handle_passing_info;
 #else
 #error "Not supported yet."
 #endif
 
-  test_child_handle_ = base::SpawnMultiProcessTestChild(
-      test_child_main, command_line, options, false);
+  test_child_handle_ =
+      base::SpawnMultiProcessTestChild(test_child_main, command_line, options);
   platform_channel_pair_->ChildProcessLaunched();
 
   CHECK_NE(test_child_handle_, base::kNullProcessHandle);
 }
 
 int MultiprocessTestHelper::WaitForChildShutdown() {
   CHECK_NE(test_child_handle_, base::kNullProcessHandle);
 
   int rv = -1;
   CHECK(base::WaitForExitCodeWithTimeout(
       test_child_handle_, &rv, TestTimeouts::action_timeout()));
   base::CloseProcessHandle(test_child_handle_);
   test_child_handle_ = base::kNullProcessHandle;
   return rv;
 }
 
 // static
 void MultiprocessTestHelper::ChildSetup() {
   CHECK(CommandLine::InitializedForCurrentProcess());
   client_platform_handle =
       embedder::PlatformChannelPair::PassClientHandleFromParentProcess(
           *CommandLine::ForCurrentProcess());
 }
 
 // static
 embedder::ScopedPlatformHandle MultiprocessTestHelper::client_platform_handle;
 
 }  // namespace test
 }  // namespace mojo