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

content/shell/browser/layout_test/layout_test_browser_main.cc

Index: content/shell/browser/layout_test/layout_test_browser_main.cc
diff --git a/content/shell/browser/layout_test/layout_test_browser_main.cc b/content/shell/browser/layout_test/layout_test_browser_main.cc
index 7ed7ea72289e3353db2870be2f6bcc0f83178bd8..adb28077ab2943dcd654208f1b2a37520b99fd5d 100644
--- a/content/shell/browser/layout_test/layout_test_browser_main.cc
+++ b/content/shell/browser/layout_test/layout_test_browser_main.cc
@@ -123,7 +123,8 @@ int LayoutTestBrowserMain(
       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);
@@ -133,6 +134,10 @@ int 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(