Move class LGapResolver to the platform specific backend implementation files.

src/arm/lithium-codegen-arm.h

Index: src/arm/lithium-codegen-arm.h
diff --git a/src/arm/lithium-codegen-arm.h b/src/arm/lithium-codegen-arm.h
index 4ef772ea938b4120e35d90f321877183660d1657..e6bb1b68d0c66df13a6c7e562d8a5fe42a304d0e 100644
--- a/src/arm/lithium-codegen-arm.h
+++ b/src/arm/lithium-codegen-arm.h
@@ -39,8 +39,30 @@ namespace internal {
 
 // Forward declarations.
 class LDeferredCode;
+class LGapNode;
 class SafepointGenerator;
 
+class LGapResolver BASE_EMBEDDED {
+ public:
+  LGapResolver();
+  const ZoneList<LMoveOperands>* Resolve(const ZoneList<LMoveOperands>* moves,
+                                         LOperand* marker_operand);
+
+ private:
+  LGapNode* LookupNode(LOperand* operand);
+  bool CanReach(LGapNode* a, LGapNode* b, int visited_id);
+  bool CanReach(LGapNode* a, LGapNode* b);
+  void RegisterMove(LMoveOperands move);
+  void AddResultMove(LOperand* from, LOperand* to);
+  void AddResultMove(LGapNode* from, LGapNode* to);
+  void ResolveCycle(LGapNode* start, LOperand* marker_operand);
+
+  ZoneList<LGapNode*> nodes_;
+  ZoneList<LGapNode*> identified_cycles_;
+  ZoneList<LMoveOperands> result_;
+  int next_visited_id_;
+};
+
 
 class LCodeGen BASE_EMBEDDED {
  public: