Establish MojoChildConnection from BrowserChildProcessHostImpl

content/public/test/test_utils.h

Index: content/public/test/test_utils.h
diff --git a/content/public/test/test_utils.h b/content/public/test/test_utils.h
index f36aa00cb8d327b4552b60bed97d2e179751ff5a..67ef47dce525e125853e6c13e32070f70975358b 100644
--- a/content/public/test/test_utils.h
+++ b/content/public/test/test_utils.h
@@ -35,6 +35,7 @@ class CommandLine;
 namespace content {
 
 class RenderFrameHost;
+class TestMojoShellContext;
 
 // Turns on nestable tasks, runs the message loop, then resets nestable tasks
 // to what they were originally. Prefer this over MessageLoop::Run for in
@@ -240,6 +241,7 @@ class InProcessUtilityThreadHelper : public BrowserChildProcessObserver {
 
   int child_thread_count_;
   scoped_refptr<MessageLoopRunner> runner_;
+  std::unique_ptr<TestMojoShellContext> shell_context_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessUtilityThreadHelper);
 };