[wasm][asm.js] Enable --validate-asm by default.

src/asmjs/asm-js.cc

Index: src/asmjs/asm-js.cc
diff --git a/src/asmjs/asm-js.cc b/src/asmjs/asm-js.cc
index 9508b489545a408c2c2ae1738f6ba99b56248e2c..496b1bc806a33d2c1f0d223bb594c400b0cd1121 100644
--- a/src/asmjs/asm-js.cc
+++ b/src/asmjs/asm-js.cc
@@ -212,15 +212,9 @@ MaybeHandle<FixedArray> AsmJs::CompileAsmViaWasm(CompilationInfo* info) {
   MessageLocation location(info->script(), info->literal()->position(),
                            info->literal()->position());
   char text[100];
-  int length;
-  if (FLAG_trace_asm_time) {
-    length =
-        base::OS::SNPrintF(text, arraysize(text),
-                           "success, asm->wasm: %0.3f ms, compile: %0.3f ms",
-                           asm_wasm_time, compile_time);
-  } else {
-    length = base::OS::SNPrintF(text, arraysize(text), "success");
-  }
+  int length = base::OS::SNPrintF(
+      text, arraysize(text), "success, asm->wasm: %0.3f ms, compile: %0.3f ms",
+      asm_wasm_time, compile_time);
   DCHECK_NE(-1, length);
   USE(length);
   Handle<String> stext(info->isolate()->factory()->InternalizeUtf8String(text));
@@ -228,7 +222,7 @@ MaybeHandle<FixedArray> AsmJs::CompileAsmViaWasm(CompilationInfo* info) {
       info->isolate(), MessageTemplate::kAsmJsCompiled, &location, stext,
       Handle<JSArray>::null());
   message->set_error_level(v8::Isolate::kMessageInfo);
-  if (!FLAG_suppress_asm_messages) {
+  if (!FLAG_suppress_asm_messages && FLAG_trace_asm_time) {
     MessageHandler::ReportMessage(info->isolate(), &location, message);
   }
 
@@ -327,13 +321,9 @@ MaybeHandle<Object> AsmJs::InstantiateAsmWasm(i::Isolate* isolate,
   }
   MessageLocation location(script, position, position);
   char text[50];
-  int length;
-  if (FLAG_trace_asm_time) {
-    length = base::OS::SNPrintF(text, arraysize(text), "success, %0.3f ms",
-                                instantiate_timer.Elapsed().InMillisecondsF());
-  } else {
-    length = base::OS::SNPrintF(text, arraysize(text), "success");
-  }
+  int length =
+      base::OS::SNPrintF(text, arraysize(text), "success, %0.3f ms",
+                         instantiate_timer.Elapsed().InMillisecondsF());
   DCHECK_NE(-1, length);
   USE(length);
   Handle<String> stext(isolate->factory()->InternalizeUtf8String(text));
@@ -341,7 +331,9 @@ MaybeHandle<Object> AsmJs::InstantiateAsmWasm(i::Isolate* isolate,
       isolate, MessageTemplate::kAsmJsInstantiated, &location, stext,
       Handle<JSArray>::null());
   message->set_error_level(v8::Isolate::kMessageInfo);
-  MessageHandler::ReportMessage(isolate, &location, message);
+  if (!FLAG_suppress_asm_messages && FLAG_trace_asm_time) {
+    MessageHandler::ReportMessage(isolate, &location, message);
+  }
 
   return module_object;
 }