[wasm] [asmjs] Route asm.js warnings to the dev console.

src/asmjs/asm-typer.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/asmjs/asm-typer.h"
 
 #include <algorithm>
 #include <limits>
 #include <memory>
 #include <string>
 
 #include "src/v8.h"
 
 #include "src/asmjs/asm-types.h"
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 #include "src/base/bits.h"
 #include "src/codegen.h"
 #include "src/globals.h"
+#include "src/messages.h"
 #include "src/utils.h"
 
-#define FAIL(node, msg)                                        \
-  do {                                                         \
-    int line = node->position() == kNoSourcePosition           \
-                   ? -1                                        \
-                   : script_->GetLineNumber(node->position()); \
-    base::OS::SNPrintF(error_message_, sizeof(error_message_), \
-                       "asm: line %d: %s", line + 1, msg);     \
-    return AsmType::None();                                    \
+#define FAIL(node, msg)                                                   \
+  do {                                                                    \
+    MessageLocation location(handle(script_), node->position(),           \
+                             node->position());                           \
+    Handle<String> message(isolate_->factory()->InternalizeOneByteString( \
+        STATIC_CHAR_VECTOR(msg)));                                        \
+    error_message_ = MessageHandler::MakeMessageObject(                   \
+        isolate_, MessageTemplate::kAsmJsInvalid, &location, message,     \
+        Handle<JSArray>::null());                                         \
+    return AsmType::None();                                               \
   } while (false)
 
 #define RECURSE(call)                                             \
   do {                                                            \
     if (GetCurrentStackPosition() < stack_limit_) {               \
       stack_overflow_ = true;                                     \
       FAIL(root_, "Stack overflow while parsing asm.js module."); \
     }                                                             \
                                                                   \
     AsmType* result = (call);                                     \
@@ skipping 2801 matching lines @@
 
   if (!heap_var_info->IsHeap()) {
     FAIL(heap,
          "Heap view creation parameter should be the module's heap parameter.");
   }
 
   DCHECK(heap_view_info->type()->IsA(AsmType::Heap()));
   return heap_view_info->type();
 }
 
-bool IsValidAsm(Isolate* isolate, Zone* zone, Script* script,
-                FunctionLiteral* root, std::string* error_message) {
-  error_message->clear();
-
-  AsmTyper typer(isolate, zone, script, root);
-  if (typer.Validate()) {
-    return true;
-  }
-
-  *error_message = typer.error_message();
-  return false;
-}
-
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8