Reland "Implement Math.random() purely in JavaScript" plus fixes.

src/v8.cc

Index: src/v8.cc
diff --git a/src/v8.cc b/src/v8.cc
index c56c82aa99dcc1e0dc09093a82094a7a1c830a99..0f01818ecd99812c11f231b01d098a28746d6e39 100644
--- a/src/v8.cc
+++ b/src/v8.cc
@@ -119,25 +119,6 @@ void V8::SetReturnAddressLocationResolver(
 }
 
 
-// Used by JavaScript APIs
-uint32_t V8::Random(Context* context) {
-  ASSERT(context->IsNativeContext());
-  ByteArray* seed = context->random_seed();
-  uint32_t* state = reinterpret_cast<uint32_t*>(seed->GetDataStartAddress());
-
-  // When we get here, the RNG must have been initialized,
-  // see the Genesis constructor in file bootstrapper.cc.
-  ASSERT_NE(0, state[0]);
-  ASSERT_NE(0, state[1]);
-
-  // Mix the bits.  Never replaces state[i] with 0 if it is nonzero.
-  state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16);
-  state[1] = 36969 * (state[1] & 0xFFFF) + (state[1] >> 16);
-
-  return (state[0] << 14) + (state[1] & 0x3FFFF);
-}
-
-
 void V8::AddCallCompletedCallback(CallCompletedCallback callback) {
   if (call_completed_callbacks_ == NULL) {  // Lazy init.
     call_completed_callbacks_ = new List<CallCompletedCallback>();