Extract some stuff into PackageManager

mojo/shell/test_package_manager.cc

+// Copyright 2015 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.
+
+#include "mojo/shell/test_package_manager.h"
+
+#include "mojo/shell/fetcher.h"
+#include "url/gurl.h"
+
+namespace mojo {
+namespace shell {
+
+TestPackageManager::TestPackageManager() {}
+TestPackageManager::~TestPackageManager() {}
+
+void TestPackageManager::RegisterContentHandler(
+    const std::string& mime_type,
+    const GURL& content_handler_url) {

[yzshen1, 2015/09/16 23:47:20]

I think this method needs to be implemented.

+}
+
+void TestPackageManager::SetApplicationManager(ApplicationManager* manager) {
+}
+
+GURL TestPackageManager::ResolveURL(const GURL& url) {
+  return url;
+}
+
+void TestPackageManager::FetchRequest(
+    URLRequestPtr request,
+    const Fetcher::FetchCallback& loader_callback) {}
+
+bool TestPackageManager::HandleWithContentHandler(
+    Fetcher* fetcher,
+    const GURL& unresolved_url,
+    base::TaskRunner* task_runner,
+    URLResponsePtr* new_response,
+    GURL* content_handler_url,
+    std::string* qualifier) {
+  MimeTypeToURLMap::iterator iter = mime_type_to_url_.find(fetcher->MimeType());
+  if (iter != mime_type_to_url_.end()) {
+    *new_response = fetcher->AsURLResponse(task_runner, 0);
+    *content_handler_url = iter->second;
+    *qualifier = (*new_response)->site.To<std::string>();
+    return true;
+  }
+  return false;
+}
+
+}  // namespace shell
+}  // namespace mojo