Towards removing dependency from generic lowering on compilation info.

src/compiler/js-generic-lowering.h

Index: src/compiler/js-generic-lowering.h
diff --git a/src/compiler/js-generic-lowering.h b/src/compiler/js-generic-lowering.h
index f1c0aa9a8eb219c3e5da45d234c21cd260cc26d9..7112e4f08657fb38b41914966ec92448f124712d 100644
--- a/src/compiler/js-generic-lowering.h
+++ b/src/compiler/js-generic-lowering.h
@@ -10,6 +10,7 @@
 #include "src/allocation.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/graph-reducer.h"
+#include "src/compiler/js-context-specialization.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/opcodes.h"
 #include "src/unique.h"
@@ -30,8 +31,8 @@ class Linkage;
 // Lowers JS-level operators to runtime and IC calls in the "generic" case.
 class JSGenericLowering : public Reducer {
  public:
-  JSGenericLowering(CompilationInfo* info, JSGraph* graph,
-                    MachineOperatorBuilder* machine);
+  JSGenericLowering(JSGraph* graph, JSContextSpecializer* spec,
+                    Linkage* linkage, MachineOperatorBuilder* machine);
   virtual ~JSGenericLowering() {}
 
   virtual Reduction Reduce(Node* node);
@@ -64,13 +65,12 @@ class JSGenericLowering : public Reducer {
   JSGraph* jsgraph() const { return jsgraph_; }
   Graph* graph() const { return jsgraph()->graph(); }
   Linkage* linkage() const { return linkage_; }
-  CompilationInfo* info() const { return info_; }
   CommonOperatorBuilder* common() const { return jsgraph()->common(); }
   MachineOperatorBuilder* machine() const { return machine_; }
 
  private:
-  CompilationInfo* info_;
   JSGraph* jsgraph_;
+  JSContextSpecializer* spec_;
   Linkage* linkage_;
   MachineOperatorBuilder* machine_;
   SetOncePointer<Node> centrystub_constant_;