Change userid from a uint32_t to a string guid

components/font_service/font_service_app.h

 // 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.
 
 #ifndef COMPONENTS_FONT_SERVICE_FONT_SERVICE_APP_H_
 #define COMPONENTS_FONT_SERVICE_FONT_SERVICE_APP_H_
 
 #include <stdint.h>
 #include <vector>
 
@@ skipping 10 matching lines @@
 class FontServiceApp : public mojo::ShellClient,
                        public mojo::InterfaceFactory<FontService>,
                        public FontService {
  public:
   FontServiceApp();
   ~FontServiceApp() override;
 
  private:
   // mojo::ShellClient:
   void Initialize(mojo::Connector* connector, const std::string& url,
-                  uint32_t id, uint32_t user_id) override;
+                  const std::string& user_id, uint32_t id) override;
   bool AcceptConnection(mojo::Connection* connection) override;
 
   // mojo::InterfaceFactory<FontService>:
   void Create(mojo::Connection* connection,
               mojo::InterfaceRequest<FontService> request) override;
 
   // FontService:
   void MatchFamilyName(const mojo::String& family_name,
                        TypefaceStyle requested_style,
                        const MatchFamilyNameCallback& callback) override;
   void OpenStream(uint32_t id_number,
                   const OpenStreamCallback& callback) override;
 
   int FindOrAddPath(const SkString& path);
 
   mojo::BindingSet<FontService> bindings_;
 
   mojo::TracingImpl tracing_;
 
   // We don't want to leak paths to our callers; we thus enumerate the paths of
   // fonts.
   std::vector<SkString> paths_;
 
   DISALLOW_COPY_AND_ASSIGN(FontServiceApp);
 };
 
 }  // namespace font_service
 
 #endif  // COMPONENTS_FONT_SERVICE_FONT_SERVICE_APP_H_