Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/fetcher/local_fetcher.h

Index: mojo/fetcher/local_fetcher.h
diff --git a/mojo/shell/local_fetcher.h b/mojo/fetcher/local_fetcher.h
similarity index 85%
rename from mojo/shell/local_fetcher.h
rename to mojo/fetcher/local_fetcher.h
index 53b598fab49b705b16760409111df1a0f3263799..7adb9b4c93db6e8ccb2631387c8ca8fa91cd0ba9 100644
--- a/mojo/shell/local_fetcher.h
+++ b/mojo/fetcher/local_fetcher.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef MOJO_SHELL_LOCAL_FETCHER_H_
-#define MOJO_SHELL_LOCAL_FETCHER_H_
+#ifndef MOJO_FETCHER_LOCAL_FETCHER_H_
+#define MOJO_FETCHER_LOCAL_FETCHER_H_
 
 #include <string>
 
@@ -15,10 +15,10 @@ namespace mojo {
 
 class NetworkService;
 
-namespace shell {
+namespace fetcher {
 
 // Implements Fetcher for file:// URLs.
-class LocalFetcher : public Fetcher {
+class LocalFetcher : public shell::Fetcher {
  public:
   LocalFetcher(NetworkService* network_service,
                const GURL& url,
@@ -52,8 +52,7 @@ class LocalFetcher : public Fetcher {
   DISALLOW_COPY_AND_ASSIGN(LocalFetcher);
 };
 
-}  // namespace shell
-
+}  // namespace fetcher
 }  // namespace mojo
 
-#endif  // MOJO_SHELL_LOCAL_FETCHER_H_
+#endif  // MOJO_FETCHER_LOCAL_FETCHER_H_