Remove Client relationship between mojo.Shell/mojo.Application

mojo/application/application_runner_chromium.cc

Index: mojo/application/application_runner_chromium.cc
diff --git a/mojo/application/application_runner_chromium.cc b/mojo/application/application_runner_chromium.cc
index 3fde912493a1226da03d9183fea8135922e11319..069ff90e346b73affdf6a940c690ce63cb747a9e 100644
--- a/mojo/application/application_runner_chromium.cc
+++ b/mojo/application/application_runner_chromium.cc
@@ -37,7 +37,8 @@ void ApplicationRunnerChromium::set_message_loop_type(
   message_loop_type_ = type;
 }
 
-MojoResult ApplicationRunnerChromium::Run(MojoHandle shell_handle) {
+MojoResult ApplicationRunnerChromium::Run(
+    MojoHandle application_request_handle) {
   DCHECK(!has_run_);
   has_run_ = true;
 
@@ -55,9 +56,9 @@ MojoResult ApplicationRunnerChromium::Run(MojoHandle shell_handle) {
     else
       loop.reset(new base::MessageLoop(message_loop_type_));
 
-    ShellPtr shell;
-    shell.Bind(MakeScopedHandle(MessagePipeHandle(shell_handle)));
-    ApplicationImpl impl(delegate_.get(), shell.Pass());
+    ApplicationImpl impl(delegate_.get(),
+                         MakeRequest<Application>(MakeScopedHandle(
+                             MessagePipeHandle(application_request_handle))));
     loop->Run();
   }
   delegate_.reset();