X64 Crank: Implemented DoBranch and all *AndBranch comparisons.

src/x64/lithium-codegen-x64.h

Index: src/x64/lithium-codegen-x64.h
diff --git a/src/x64/lithium-codegen-x64.h b/src/x64/lithium-codegen-x64.h
index 8d1c5c4ed25ec0307396313619a91b5d3ecc56eb..4ce70046259ef6d4b9e168041ff9f82870fd56ad 100644
--- a/src/x64/lithium-codegen-x64.h
+++ b/src/x64/lithium-codegen-x64.h
@@ -138,8 +138,7 @@ class LCodeGen BASE_EMBEDDED {
                        Label* if_false,
                        Handle<String> class_name,
                        Register input,
-                       Register temporary,
-                       Register temporary2);
+                       Register temporary);
 
   int StackSlotCount() const { return chunk()->spill_slot_count(); }
   int ParameterCount() const { return scope()->num_parameters(); }