Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/runner/url_resolver.h

-// 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_RUNNER_URL_RESOLVER_H_
-#define MOJO_RUNNER_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 runner {
-
-// This class supports the mapping of URLs to other URLs.
-// It's commonly used with mojo: URL, to provide a physical location URL
-// (i.e. file: or https:) but works with any URL.
-// By default, "mojo:" URLs resolve to a file location, with ".mojo" appended,
-// but that resolution can be customized via the AddURLMapping and
-// AddOriginMapping methods.
-class URLResolver {
- public:
-  URLResolver();
-  ~URLResolver();
-
-  // Used for the return value of GetOriginMappings().
-  struct OriginMapping {
-    OriginMapping(const std::string& origin, const std::string& base_url)
-        : origin(origin), base_url(base_url) {}
-
-    std::string origin;
-    std::string base_url;
-  };
-
-  // Returns a list of origin mappings based on command line args.
-  // The switch --map-origin can be specified multiple times. Each occurrence
-  // has the format of --map-origin={origin}={base_url}
-  // For example:
-  //   --map-origin=http://domokit.org=file:///source/out
-  static std::vector<OriginMapping> GetOriginMappings(
-      const base::CommandLine::StringVector& argv);
-
-  // Add a custom mapping for a particular URL. If |mapped_url| is
-  // itself a mojo URL, then normal resolution rules apply.
-  void AddURLMapping(const GURL& url, const GURL& mapped_url);
-
-  // Add a custom mapping for all URLs rooted at |origin|. An origin is a
-  // combination of URL scheme, host and port.
-  void AddOriginMapping(const GURL& origin, const GURL& base_url);
-
-  // Applies all custom mappings for |url|, returning the last non-mapped url.
-  // For example, if 'a' maps to 'b' and 'b' maps to 'c', calling this with 'a'
-  // returns 'c'.
-  GURL ApplyMappings(const GURL& url) const;
-
-  // If specified, then "mojo:" URLs will be resolved relative to this
-  // URL. That is, the portion after the colon will be appended to
-  // |mojo_base_url| with .mojo appended.
-  void SetMojoBaseURL(const GURL& mojo_base_url);
-
-  // 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:
-  using GURLToGURLMap = std::map<GURL, GURL>;
-  GURLToGURLMap url_map_;
-  GURLToGURLMap origin_map_;
-  GURL mojo_base_url_;
-
-  DISALLOW_COPY_AND_ASSIGN(URLResolver);
-};
-
-}  // namespace runner
-}  // namespace mojo
-
-#endif  // MOJO_RUNNER_URL_RESOLVER_H_