[wasm] Provide backoff implementations for the Fxx rounding instructions

test/cctest/test-api-fast-accessor-builder.cc

Index: test/cctest/test-api-fast-accessor-builder.cc
diff --git a/test/cctest/test-api-fast-accessor-builder.cc b/test/cctest/test-api-fast-accessor-builder.cc
index 9cadc28df1ff3be8475eb904f231fb4ebd23a359..215ca03fb85bd3d790c370fedcf504490dd446ca 100644
--- a/test/cctest/test-api-fast-accessor-builder.cc
+++ b/test/cctest/test-api-fast-accessor-builder.cc
@@ -287,7 +287,6 @@ TEST(FastAccessorLoad) {
   ExpectString("loadval()", "Hello");
 }
 
-
 void ApiCallbackInt(const v8::FunctionCallbackInfo<v8::Value>& info) {
   info.GetReturnValue().Set(12345);
 }
@@ -298,14 +297,12 @@ void ApiCallbackString(const v8::FunctionCallbackInfo<v8::Value>& info) {
   info.GetReturnValue().Set(v8_str(kApiCallbackStringValue));
 }
 
-
 void ApiCallbackParam(const v8::FunctionCallbackInfo<v8::Value>& info) {
   CHECK_EQ(1, info.Length());
   CHECK(info[0]->IsNumber());
   info.GetReturnValue().Set(info[0]);
 }
 
-
 // "Fast" accessor, callback to embedder
 TEST(FastAccessorCallback) {
   LocalContext env;