Implement GetSandboxType() on all platforms and implement for all process types.

chrome/browser/chrome_content_browser_client.h

 // Copyright (c) 2012 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 CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 233 matching lines @@
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   void GetAdditionalMappedFilesForChildProcess(
       const base::CommandLine& command_line,
       int child_process_id,
       content::FileDescriptorInfo* mappings) override;
 #endif
 #if defined(OS_WIN)
   const wchar_t* GetResourceDllName() override;
   void PreSpawnRenderer(sandbox::TargetPolicy* policy, bool* success) override;
+  base::string16 GetAppContainerSidForSandboxType(
+      int sandbox_type) const override;
 #endif
   void OverrideRenderFrameMojoServices(
       content::ServiceRegistry* registry,
       content::RenderFrameHost* render_frame_host) override;
   void RegisterMojoApplications(StaticMojoApplicationMap* apps) override;
   void OpenURL(content::BrowserContext* browser_context,
                const content::OpenURLParams& params,
                const base::Callback<void(content::WebContents*)>& callback)
       override;
   content::PresentationServiceDelegate* GetPresentationServiceDelegate(
@@ skipping 55 matching lines @@
   std::vector<ChromeContentBrowserClientParts*> extra_parts_;
 
   base::WeakPtrFactory<ChromeContentBrowserClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_