Get rid of content dependency from sandbox_policy.h

content/browser/content_browser_client.h

Index: content/browser/content_browser_client.h
===================================================================
--- content/browser/content_browser_client.h	(revision 86986)
+++ content/browser/content_browser_client.h	(working copy)
@@ -24,6 +24,10 @@
 class CookieOptions;
 }
 
+namespace sandbox {
+class TargetPolicy;
+}
+
 namespace content {
 
 class ResourceContext;
@@ -105,6 +109,12 @@
   // Can return an optional fd for crash handling, otherwise returns -1.
   virtual int GetCrashSignalFD(const std::string& process_type);
 #endif
+
+#if defined(OS_WIN)
+  // Allows the embedder to sandbox a plugin, and apply a custom policy.
+  virtual bool SandboxPlugin(CommandLine* command_line,
+                             sandbox::TargetPolicy* policy);
+#endif
 };
 
 }  // namespace content