Revert 17963, 17962 and 17955: Random number generator in JS changes

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index ca7831c2e7f7c7f17ea7c56face430349fcf913e..a475d8ccb06e213c70135335c038939e6447740c 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -153,6 +153,7 @@ class LCodeGen;
   V(Parameter)                                  \
   V(Power)                                      \
   V(PushArgument)                               \
+  V(Random)                                     \
   V(RegExpLiteral)                              \
   V(Return)                                     \
   V(SeqStringGetChar)                           \
@@ -1423,6 +1424,28 @@ class LPower V8_FINAL : public LTemplateInstruction<1, 2, 0> {
 };
 
 
+class LRandom V8_FINAL : public LTemplateInstruction<1, 1, 3> {
+ public:
+  LRandom(LOperand* global_object,
+          LOperand* scratch,
+          LOperand* scratch2,
+          LOperand* scratch3) {
+    inputs_[0] = global_object;
+    temps_[0] = scratch;
+    temps_[1] = scratch2;
+    temps_[2] = scratch3;
+  }
+
+  LOperand* global_object() { return inputs_[0]; }
+  LOperand* scratch() const { return temps_[0]; }
+  LOperand* scratch2() const { return temps_[1]; }
+  LOperand* scratch3() const { return temps_[2]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(Random, "random")
+  DECLARE_HYDROGEN_ACCESSOR(Random)
+};
+
+
 class LArithmeticD V8_FINAL : public LTemplateInstruction<1, 2, 0> {
  public:
   LArithmeticD(Token::Value op, LOperand* left, LOperand* right)