mojo: kill app_thread before unloading main app library and add tests

mojo/shell/mojo_url_resolver.cc

 // 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.
 
 #include "mojo/shell/mojo_url_resolver.h"
 
 #include "base/base_paths.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
@@ skipping 20 matching lines @@
 }  // namespace
 
 MojoURLResolver::MojoURLResolver() {
   // Needed to treat first component of mojo URLs as host, not path.
   url::AddStandardScheme("mojo");
 }
 
 MojoURLResolver::~MojoURLResolver() {
 }
 
+void MojoURLResolver::SetBaseURL(const GURL& base_url) {
+  DCHECK(base_url.is_valid());
+  base_url_ = base_url;
+  // Force a trailing slash on the base_url to simplify resolving
+  // relative files and URLs below.
+  if (base_url.has_path() && *base_url.path().rbegin() != '/') {
+    std::string path(base_url.path() + '/');
+    GURL::Replacements replacements;
+    replacements.SetPathStr(path);
+    base_url_ = base_url_.ReplaceComponents(replacements);
+  }
+}
+
 void MojoURLResolver::AddCustomMapping(const GURL& mojo_url,
                                        const GURL& resolved_url) {
   url_map_[mojo_url] = resolved_url;
 }
 
 void MojoURLResolver::AddLocalFileMapping(const GURL& mojo_url) {
   local_file_set_.insert(mojo_url);
 }
 
 GURL MojoURLResolver::Resolve(const GURL& mojo_url) const {
   std::map<GURL, GURL>::const_iterator it = url_map_.find(mojo_url);
   if (it != url_map_.end())
     return it->second;
 
   std::string lib = MakeSharedLibraryName(mojo_url.host());
 
   if (local_file_set_.find(mojo_url) != local_file_set_.end()) {
     // Resolve to a local file URL.
     base::FilePath path;
     PathService::Get(base::DIR_MODULE, &path);
     path = path.Append(base::FilePath::FromUTF8Unsafe(lib));
     return net::FilePathToFileURL(path);
   }
 
-  // Otherwise, resolve to an URL relative to origin_.
-  return GURL(origin_ + "/" + lib);
+  // Otherwise, resolve to an URL relative to base_url_.
+  return base_url_.Resolve(lib);
 }
 
 }  // namespace shell
 }  // namespace mojo