Add the PPAPI X509 Certificate interface and implementation.

webkit/plugins/ppapi/mock_plugin_delegate.h

Index: webkit/plugins/ppapi/mock_plugin_delegate.h
diff --git a/webkit/plugins/ppapi/mock_plugin_delegate.h b/webkit/plugins/ppapi/mock_plugin_delegate.h
index 214a868ddbefd4f16fcc1b31cf632d523167bbc8..47ae622bc4ba520e4df70a9c3a115ab991b2c3d3 100644
--- a/webkit/plugins/ppapi/mock_plugin_delegate.h
+++ b/webkit/plugins/ppapi/mock_plugin_delegate.h
@@ -8,6 +8,7 @@
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
 struct PP_NetAddress_Private;
+namespace ppapi { class PPB_X509Certificate_Fields; }
 namespace webkit_glue { class ClipboardClient; }
 
 namespace webkit {
@@ -156,6 +157,10 @@ class MockPluginDelegate : public PluginDelegate {
       webkit_glue::NetworkListObserver* observer) OVERRIDE;
   virtual void RemoveNetworkListObserver(
       webkit_glue::NetworkListObserver* observer) OVERRIDE;
+  virtual bool X509CertificateParseDER(
+      const std::vector<char>& der,
+      ::ppapi::PPB_X509Certificate_Fields* fields);
+
   virtual int32_t ShowContextMenu(
       PluginInstance* instance,
       webkit::ppapi::PPB_Flash_Menu_Impl* menu,