[OLD ATTEMPT, DO NOT REVIEW] mustash: Enable connections to mus from the Chrome renderer

content/browser/mojo/mojo_shell_client_host.h

Index: content/browser/mojo/mojo_shell_client_host.h
diff --git a/content/browser/mojo/mojo_shell_client_host.h b/content/browser/mojo/mojo_shell_client_host.h
index 6f61f71e205fd0d9fe599d27c04e5e5aeaa136e5..4173799281cafa0e7db42b3e64b1b1f74dda0d85 100644
--- a/content/browser/mojo/mojo_shell_client_host.h
+++ b/content/browser/mojo/mojo_shell_client_host.h
@@ -9,6 +9,10 @@
 
 #include "base/process/process_handle.h"
 
+namespace mojo {
+class ApplicationConnection;
+}
+
 namespace content {
 
 class RenderProcessHost;
@@ -28,6 +32,9 @@ void RegisterChildWithExternalShell(int child_process_id,
 std::string GetMojoApplicationInstanceURL(
     RenderProcessHost* render_process_host);
 
+// Returns the RenderProcessHost ID associated with the mojo app URL.
+int GetRenderProcessIDFromConnection(mojo::ApplicationConnection* connection);
+
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MOJO_MOJO_SHELL_CLIENT_HOST_H_