Update mojo sdk to rev 3d23dae011859a2aae49f1d1adde705c8e85d819

content/browser/mojo/mojo_application_host.cc

Index: content/browser/mojo/mojo_application_host.cc
diff --git a/content/browser/mojo/mojo_application_host.cc b/content/browser/mojo/mojo_application_host.cc
index 883945f92badedb8198ec0bc0ad776fc89acc62b..a9d00026bd04ee8c352712ff818a1a899dbc6428 100644
--- a/content/browser/mojo/mojo_application_host.cc
+++ b/content/browser/mojo/mojo_application_host.cc
@@ -63,9 +63,18 @@ bool MojoApplicationHost::Init() {
 
   mojo::embedder::PlatformChannelPair channel_pair;
 
+  scoped_refptr<base::TaskRunner> io_task_runner;
+  if (io_task_runner_override_) {
+    io_task_runner = io_task_runner_override_;
+  } else {
+    io_task_runner =
+        BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::IO)
+          ->task_runner();
+  }
+
   mojo::ScopedMessagePipeHandle message_pipe = channel_init_.Init(
       PlatformFileFromScopedPlatformHandle(channel_pair.PassServerHandle()),
-      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
+      io_task_runner);
   if (!message_pipe.is_valid())
     return false;
 
@@ -93,4 +102,9 @@ void MojoApplicationHost::WillDestroySoon() {
   channel_init_.WillDestroySoon();
 }
 
+void MojoApplicationHost::OverrideIOTaskRunnerForTest(
+    scoped_refptr<base::TaskRunner> io_task_runner) {
+  io_task_runner_override_ = io_task_runner;
+}
+
 }  // namespace content