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

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index 5b9278b3373e91a7e323a940f41ad4e65645e4b9..72932ded1664cae205687e33601b2c8bddf022b1 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -155,7 +155,6 @@ class LCodeGen;
   V(Parameter)                                  \
   V(Power)                                      \
   V(PushArgument)                               \
-  V(Random)                                     \
   V(RegExpLiteral)                              \
   V(Return)                                     \
   V(SeqStringGetChar)                           \
@@ -1481,28 +1480,6 @@ 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() const { 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)