Get ClientCertStore through ResourceContext.

content/public/browser/resource_context.h

Index: content/public/browser/resource_context.h
diff --git a/content/public/browser/resource_context.h b/content/public/browser/resource_context.h
index 191f30ac13bfe71b1d65053b73199c436b47c808..7019fb715f61f9a0cd277e82b456d89ca5a086d6 100644
--- a/content/public/browser/resource_context.h
+++ b/content/public/browser/resource_context.h
@@ -6,6 +6,7 @@
 #define CONTENT_PUBLIC_BROWSER_RESOURCE_CONTEXT_H_
 
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/supports_user_data.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
@@ -17,6 +18,7 @@ class AppCacheService;
 }
 
 namespace net {
+class ClientCertStore;
 class HostResolver;
 class URLRequestContext;
 }
@@ -41,6 +43,9 @@ class CONTENT_EXPORT ResourceContext : public base::SupportsUserData {
   // with a BrowsingContext.
   virtual net::URLRequestContext* GetRequestContext() = 0;
 
+  // Get platform ClientCertStore. May return NULL.
+  virtual scoped_ptr<net::ClientCertStore> CreateClientCertStore();
+
   // Returns true if microphone access is allowed for |origin|. Used to
   // determine what level of authorization is given to |origin| to access
   // resource metadata.