Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/fetcher/local_fetcher.cc

Index: mojo/fetcher/local_fetcher.cc
diff --git a/mojo/shell/local_fetcher.cc b/mojo/fetcher/local_fetcher.cc
similarity index 97%
rename from mojo/shell/local_fetcher.cc
rename to mojo/fetcher/local_fetcher.cc
index 8da8ca9b5d4cef31a5fdfd03949a4d331ba64ffb..13f370232079d54bd9716a76ab541091482dc859 100644
--- a/mojo/shell/local_fetcher.cc
+++ b/mojo/fetcher/local_fetcher.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "mojo/shell/local_fetcher.h"
+#include "mojo/fetcher/local_fetcher.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
@@ -19,10 +19,9 @@
 #include "url/url_util.h"
 
 namespace mojo {
-namespace shell {
+namespace fetcher {
 
 namespace {
-
 void IgnoreResult(bool result) {
 }
 
@@ -113,5 +112,5 @@ bool LocalFetcher::PeekFirstLine(std::string* line) {
   return true;
 }
 
-}  // namespace shell
+}  // namespace fetcher
 }  // namespace mojo