[Android] Redirect std{in,out,err} to sockets for layout tests.

content/shell/browser/layout_test/layout_test_browser_main.cc

 // Copyright 2014 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 "content/shell/browser/layout_test/layout_test_browser_main.h"
 
 #include <iostream>
 #include <memory>
 
 #include "base/command_line.h"
@@ skipping 105 matching lines @@
   base::ScopedTempDir browser_context_path_for_layout_tests;
 
   CHECK(browser_context_path_for_layout_tests.CreateUniqueTempDir());
   CHECK(
       !browser_context_path_for_layout_tests.GetPath().MaybeAsASCII().empty());
   base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
       switches::kContentShellDataPath,
       browser_context_path_for_layout_tests.GetPath().MaybeAsASCII());
 
 #if defined(OS_ANDROID)
-  content::EnsureInitializeForAndroidLayoutTests();
+  content::ScopedAndroidConfiguration android_configuration;
+  android_configuration.Initialize();
 #endif
 
   int exit_code = main_runner->Initialize(parameters);
   DCHECK_LT(exit_code, 0)
       << "BrowserMainRunner::Initialize failed in LayoutTestBrowserMain";
 
   if (exit_code >= 0)
     return exit_code;
 
+#if defined(OS_ANDROID)
+  android_configuration.RedirectStreams();

[Peter Beverloo, 2016/12/06 19:24:06]

What's the reason that you're splitting up the constructor, Initialize() and
RedirectStreams()?

[jbudorick, 2016/12/08 02:04:13]

- Initialize has to run before main_runner->Initialize s.t. it can set up
NestedMessageLoopAndroid
- RedirectStreams has to run after main_runner->Initialize s.t. the thread task
runner to which it posts tasks has been initialized.

That said, the constructor and Initialize can be combined.

+#endif
+
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kCheckLayoutTestSysDeps)) {
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::MessageLoop::QuitWhenIdleClosure());
     main_runner->Run();
     content::Shell::CloseAllWindows();
     main_runner->Shutdown();
     return 0;
   }
 
   exit_code = RunTests(main_runner);
   base::RunLoop().RunUntilIdle();
 
   content::Shell::CloseAllWindows();
 #if !defined(OS_ANDROID)
   main_runner->Shutdown();
 #endif
 
   return exit_code;
 }