Remove Platform::cryptographicallyRandomValues

sky/engine/public/platform/Platform.h

Index: sky/engine/public/platform/Platform.h
diff --git a/sky/engine/public/platform/Platform.h b/sky/engine/public/platform/Platform.h
index 9351aaa530decb6e5903d4fa02829ffcf9ef12f2..cf2f0c97928ec430ba10207ad512e1d7a0749ea2 100644
--- a/sky/engine/public/platform/Platform.h
+++ b/sky/engine/public/platform/Platform.h
@@ -249,9 +249,6 @@ public:
     // 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) { }