Revert of 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 aa426869aafe2c7e22874e697a8254aabd2b18c1..d96ac1721f4ed0eabdd14a61ddaee39d69fea390 100644
--- a/mojo/runner/android/main.cc
+++ b/mojo/runner/android/main.cc
@@ -132,9 +132,9 @@
   // 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.
-  base::FilePath shell_file_root(
-      base::android::ConvertJavaStringToUTF8(env, j_local_apps_directory));
-  Context* shell_context = new Context(shell_file_root);
+  Context* shell_context = new Context();
+  shell_context->SetShellFileRoot(base::FilePath(
+      base::android::ConvertJavaStringToUTF8(env, j_local_apps_directory)));
   g_context.Get().reset(shell_context);
 
   g_java_message_loop.Get().reset(new base::MessageLoopForUI);