[wasm] Grow memory should return -1 on failure.

test/mjsunit/wasm/wasm-constants.js

Index: test/mjsunit/wasm/wasm-constants.js
diff --git a/test/mjsunit/wasm/wasm-constants.js b/test/mjsunit/wasm/wasm-constants.js
index 4865b9c7e712ab0c43d244adee220e9c884b3a25..d6ed05bc88c88c0baaccaeaf06444721adeba981 100644
--- a/test/mjsunit/wasm/wasm-constants.js
+++ b/test/mjsunit/wasm/wasm-constants.js
@@ -316,8 +316,7 @@ var kTrapRemByZero            = 4;
 var kTrapFloatUnrepresentable = 5;
 var kTrapFuncInvalid          = 6;
 var kTrapFuncSigMismatch      = 7;
-var kTrapMemAllocationFail    = 8;
-var kTrapInvalidIndex         = 9;
+var kTrapInvalidIndex         = 8;
 
 var kTrapMsgs = [
   "unreachable",
@@ -328,7 +327,6 @@ var kTrapMsgs = [
   "integer result unrepresentable",
   "invalid function",
   "function signature mismatch",
-  "failed to allocate memory",
   "invalid index into function table"
 ];