Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/runner/android/main.cc

Index: mojo/runner/android/main.cc
diff --git a/mojo/runner/android/main.cc b/mojo/runner/android/main.cc
index 2b4de3f70fa9820849c2739473135d2f9f40c242..9759f824be7b7bee86ddd084be7d49e2164d215c 100644
--- a/mojo/runner/android/main.cc
+++ b/mojo/runner/android/main.cc
@@ -132,9 +132,9 @@ static void Init(JNIEnv* env,
   // We want ~MessageLoop to happen prior to ~Context. Initializing
   // LazyInstances is akin to stack-allocating objects; their destructors
   // will be invoked first-in-last-out.
-  Context* shell_context = new Context();
-  shell_context->SetShellFileRoot(base::FilePath(
-      base::android::ConvertJavaStringToUTF8(env, j_local_apps_directory)));
+  base::FilePath shell_file_root(
+      base::android::ConvertJavaStringToUTF8(env, j_local_apps_directory));
+  Context* shell_context = new Context(shell_file_root);
   g_context.Get().reset(shell_context);
 
   g_java_message_loop.Get().reset(new base::MessageLoopForUI);