Simplify resolution of mojo: URLs.

shell/android/mojo_main.cc

Index: shell/android/mojo_main.cc
diff --git a/shell/android/mojo_main.cc b/shell/android/mojo_main.cc
index 9c8178b10073afbd692f3136ef93f17c8bbc9f3e..86ae823380e69b678576ffd051484875f25bec83 100644
--- a/shell/android/mojo_main.cc
+++ b/shell/android/mojo_main.cc
@@ -158,7 +158,7 @@ static void Init(JNIEnv* env,
   // LazyInstances is akin to stack-allocating objects; their destructors
   // will be invoked first-in-last-out.
   Context* shell_context = new Context();
-  shell_context->mojo_url_resolver()->SetLocalAppsPath(base::FilePath(
+  shell_context->SetShellFileRoot(base::FilePath(
       base::android::ConvertJavaStringToUTF8(env, j_local_apps_directory)));
   for (auto& args : parameters)
     ApplyApplicationArgs(shell_context, args);