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

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 4e0647bf2a5a09408a14009d6a653b5a354364bc..ba940736dfff6e098afef099fb82b6aedbe4b75b 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1679,6 +1679,7 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     SimpleInstallFunction(math, "expm1", Builtins::kMathExpm1, 1, true);
     SimpleInstallFunction(math, "clz32", Builtins::kMathClz32, 1, true);
     SimpleInstallFunction(math, "cos", Builtins::kMathCos, 1, true);
+    SimpleInstallFunction(math, "cosh", Builtins::kMathCosh, 1, true);
     Handle<JSFunction> math_exp =
         SimpleInstallFunction(math, "exp", Builtins::kMathExp, 1, true);
     native_context()->set_math_exp(*math_exp);
@@ -1700,10 +1701,12 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     native_context()->set_math_pow(*math_pow);
     SimpleInstallFunction(math, "round", Builtins::kMathRound, 1, true);
     SimpleInstallFunction(math, "sin", Builtins::kMathSin, 1, true);
+    SimpleInstallFunction(math, "sinh", Builtins::kMathSinh, 1, true);
     Handle<JSFunction> math_sqrt =
         SimpleInstallFunction(math, "sqrt", Builtins::kMathSqrt, 1, true);
     native_context()->set_math_sqrt(*math_sqrt);
     SimpleInstallFunction(math, "tan", Builtins::kMathTan, 1, true);
+    SimpleInstallFunction(math, "tanh", Builtins::kMathTanh, 1, true);
     SimpleInstallFunction(math, "trunc", Builtins::kMathTrunc, 1, true);
 
     // Install math constants.
@@ -2613,13 +2616,6 @@ void Bootstrapper::ExportFromRuntime(Isolate* isolate,
     }
 
     {
-      // TODO(mvstanton): Remove this when MathSinh, MathCosh and MathTanh are
-      // no longer implemented in fdlibm.js.
-      SimpleInstallFunction(container, "MathExpm1", Builtins::kMathExpm1, 1,
-                            true);
-    }
-
-    {
       PrototypeIterator iter(native_context->sloppy_async_function_map());
       Handle<JSObject> async_function_prototype(iter.GetCurrent<JSObject>());