Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/fetcher/url_resolver.h

Index: mojo/fetcher/url_resolver.h
diff --git a/mojo/fetcher/url_resolver.h b/mojo/fetcher/url_resolver.h
new file mode 100644
index 0000000000000000000000000000000000000000..47a69faca19d46376abac78c265d84f0cf22c3f1
--- /dev/null
+++ b/mojo/fetcher/url_resolver.h
@@ -0,0 +1,38 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_FETCHER_URL_RESOLVER_H_
+#define MOJO_FETCHER_URL_RESOLVER_H_
+
+#include <map>
+#include <set>
+
+#include "base/basictypes.h"
+#include "base/command_line.h"
+#include "base/files/file_path.h"
+#include "url/gurl.h"
+
+namespace mojo {
+namespace fetcher {
+
+// Supports resolving "mojo:" URLs to a file location, with ".mojo" appended.
+class URLResolver {
+ public:
+  explicit URLResolver(const GURL& mojo_base_url);
+  ~URLResolver();
+
+  // Resolve the given "mojo:" URL to the URL that should be used to fetch the
+  // code for the corresponding Mojo App.
+  GURL ResolveMojoURL(const GURL& mojo_url) const;
+
+ private:
+  GURL mojo_base_url_;
+
+  DISALLOW_COPY_AND_ASSIGN(URLResolver);
+};
+
+}  // namespace fetcher
+}  // namespace mojo
+
+#endif  // MOJO_FETCHER_URL_RESOLVER_H_