Adding <keygen> Content Setting (Blink)

third_party/WebKit/public/web/WebContentSettingsClient.h

Index: third_party/WebKit/public/web/WebContentSettingsClient.h
diff --git a/third_party/WebKit/public/web/WebContentSettingsClient.h b/third_party/WebKit/public/web/WebContentSettingsClient.h
index dc957e1f5e4cde1cf2e9410ca3ec9c45f9033698..f922e73d1312c660134d0194d08a19faf156de7f 100644
--- a/third_party/WebKit/public/web/WebContentSettingsClient.h
+++ b/third_party/WebKit/public/web/WebContentSettingsClient.h
@@ -33,6 +33,9 @@ public:
     // Controls whether HTML5 media elements (<audio>, <video>) are allowed for this frame.
     virtual bool allowMedia(const WebURL& videoURL) { return true; }
 
+    // Controls whether keygen is allowed for this frame.
+    virtual bool allowKeygen() { return false; }
+
     // Controls whether plugins are allowed for this frame.
     virtual bool allowPlugins(bool enabledPerSettings) { return enabledPerSettings; }
 
@@ -78,6 +81,9 @@ public:
     // but it's been named for consistency with the rest of the interface.
     virtual bool allowMutationEvents(bool defaultValue) { return defaultValue; }
 
+    // Notifies the client that the frame would have instantiated a keygen if keygen was enabled.
+    virtual void didNotAllowKeygen() { }
+
     // Notifies the client that the frame would have instantiated a plugin if plugins were enabled.
     virtual void didNotAllowPlugins() { }