Added a Isolate* parameter to Serializer::enabled().

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 43a676c8b49241dbe8183483328b33b3c73e11dd..f9c5bdcb06488c36ac6446b75ed909fd1f9ab238 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -257,7 +257,9 @@ class LInstruction : public ZoneObject {
   // Interface to the register allocator and iterators.
   bool ClobbersTemps() const { return IsCall(); }
   bool ClobbersRegisters() const { return IsCall(); }
-  virtual bool ClobbersDoubleRegisters() const { return IsCall(); }
+  virtual bool ClobbersDoubleRegisters(Isolate* isolate) const V8_OVERRIDE {
+    return IsCall();
+  }
 
   virtual void SetDeferredLazyDeoptimizationEnvironment(LEnvironment* env) { }
 
@@ -1965,7 +1967,7 @@ class LCallRuntime V8_FINAL : public LTemplateInstruction<1, 1, 0> {
   DECLARE_CONCRETE_INSTRUCTION(CallRuntime, "call-runtime")
   DECLARE_HYDROGEN_ACCESSOR(CallRuntime)
 
-  virtual bool ClobbersDoubleRegisters() const V8_OVERRIDE {
+  virtual bool ClobbersDoubleRegisters(Isolate* isolate) const V8_OVERRIDE {
     return save_doubles() == kDontSaveFPRegs;
   }
 
@@ -2682,6 +2684,8 @@ class LChunkBuilder V8_FINAL : public LChunkBuilderBase {
         next_block_(NULL),
         allocator_(allocator) { }
 
+  Isolate* isolate() const { return graph_->isolate(); }
+
   // Build the sequence for the graph.
   LPlatformChunk* Build();