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

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index eeffc167c26d3daf7ab5132d8678ce0de438dd41..a1e892bb24354fa9de1f962bec853f9138cf16a3 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1720,6 +1720,19 @@ LInstruction* LChunkBuilder::DoPower(HPower* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoRandom(HRandom* instr) {
+  ASSERT(instr->representation().IsDouble());
+  ASSERT(instr->global_object()->representation().IsTagged());
+  LOperand* global_object = UseTempRegister(instr->global_object());
+  LOperand* scratch = TempRegister();
+  LOperand* scratch2 = TempRegister();
+  LOperand* scratch3 = TempRegister();
+  LRandom* result = new(zone()) LRandom(
+      global_object, scratch, scratch2, scratch3);
+  return DefineFixedDouble(result, d7);
+}
+
+
 LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
   ASSERT(instr->left()->representation().IsTagged());
   ASSERT(instr->right()->representation().IsTagged());