[builtins] Unify Cosh, Sinh and Tanh as exports from flibm

src/compiler/js-builtin-reducer.h

Index: src/compiler/js-builtin-reducer.h
diff --git a/src/compiler/js-builtin-reducer.h b/src/compiler/js-builtin-reducer.h
index 5ddc86ef9950177771da5be1fbb94b1f86061c4c..cbf0310bebc6d70cd447d89c84b9bb7e7c27e1e4 100644
--- a/src/compiler/js-builtin-reducer.h
+++ b/src/compiler/js-builtin-reducer.h
@@ -37,6 +37,7 @@ class JSBuiltinReducer final : public AdvancedReducer {
   Reduction ReduceMathCeil(Node* node);
   Reduction ReduceMathClz32(Node* node);
   Reduction ReduceMathCos(Node* node);
+  Reduction ReduceMathCosh(Node* node);
   Reduction ReduceMathExp(Node* node);
   Reduction ReduceMathExpm1(Node* node);
   Reduction ReduceMathFloor(Node* node);
@@ -51,8 +52,10 @@ class JSBuiltinReducer final : public AdvancedReducer {
   Reduction ReduceMathPow(Node* node);
   Reduction ReduceMathRound(Node* node);
   Reduction ReduceMathSin(Node* node);
+  Reduction ReduceMathSinh(Node* node);
   Reduction ReduceMathSqrt(Node* node);
   Reduction ReduceMathTan(Node* node);
+  Reduction ReduceMathTanh(Node* node);
   Reduction ReduceMathTrunc(Node* node);
   Reduction ReduceStringFromCharCode(Node* node);