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

content/public/browser/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 CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 616 matching lines @@
 
 #if defined(OS_WIN)
   // Returns the name of the dll that contains cursors and other resources.
   virtual const wchar_t* GetResourceDllName();
 
   // This is called on the PROCESS_LAUNCHER thread before the renderer process
   // is launched. It gives the embedder a chance to add loosen the sandbox
   // policy.
   virtual void PreSpawnRenderer(sandbox::TargetPolicy* policy,
                                 bool* success) {}
+
+  // Returns the App Container SID for the specified sandboxed process type, or
+  // empty string if this sandboxed process type does not support living inside
+  // an App Container.
+  virtual base::string16 GetAppContainerSidForSandboxType(
+      int sandbox_type) const;
 #endif
 
 #if defined(VIDEO_HOLE)
   // Allows an embedder to provide its own ExternalVideoSurfaceContainer
   // implementation.  Return nullptr to disable external surface video.
   virtual ExternalVideoSurfaceContainer*
   OverrideCreateExternalVideoSurfaceContainer(WebContents* web_contents);
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_