Remove Platform::cryptographicallyRandomValues

sky/engine/public/platform/Platform.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 231 matching lines @@
     virtual WebString defaultLocale() { return WebString(); }
 
     // Wall clock time in seconds since the epoch.
     virtual double currentTime() { return 0; }
 
     // Monotonically increasing time in seconds from an arbitrary fixed point in the past.
     // This function is expected to return at least millisecond-precision values. For this reason,
     // it is recommended that the fixed point be no further in the past than the epoch.
     virtual double monotonicallyIncreasingTime() { return 0; }
 
-    // WebKit clients must implement this funcion if they use cryptographic randomness.
-    virtual void cryptographicallyRandomValues(unsigned char* buffer, size_t length) = 0;
-
     // Delayed work is driven by a shared timer.
     typedef void (*SharedTimerFunction)();
     virtual void setSharedTimerFiredFunction(SharedTimerFunction timerFunction) { }
     virtual void setSharedTimerFireInterval(double) { }
     virtual void stopSharedTimer() { }
 
     // Callable from a background WebKit thread.
     virtual void callOnMainThread(void (*func)(void*), void* context) { }
     virtual base::SingleThreadTaskRunner* mainThreadTaskRunner() { return 0; }
 
@@ skipping 158 matching lines @@
     // longer notify the listener, if any.
     virtual void stopListening(WebPlatformEventType type) { }
 
 protected:
     virtual ~Platform() { }
 };
 
 } // namespace blink
 
 #endif