[wasm] Introduce WasmSharedModuleData and refactor other objects

src/asmjs/asm-js.cc

 // Copyright 2015 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-js.h"
 
 #include "src/api-natives.h"
 #include "src/api.h"
 #include "src/asmjs/asm-typer.h"
 #include "src/asmjs/asm-wasm-builder.h"
@@ skipping 161 matching lines @@
     DCHECK(!info->isolate()->has_pending_exception());
     MessageHandler::ReportMessage(info->isolate(),
                                   builder.typer()->message_location(),
                                   builder.typer()->error_message());
     return MaybeHandle<FixedArray>();
   }
   double asm_wasm_time = asm_wasm_timer.Elapsed().InMillisecondsF();
 
   wasm::ZoneBuffer* module = asm_wasm_result.module_bytes;
   wasm::ZoneBuffer* asm_offsets = asm_wasm_result.asm_offset_table;
+  Vector<const byte> asm_offsets_vec(asm_offsets->begin(),
+                                     static_cast<int>(asm_offsets->size()));
 
   base::ElapsedTimer compile_timer;
   compile_timer.Start();
   MaybeHandle<JSObject> compiled = wasm::CreateModuleObjectFromBytes(
       info->isolate(), module->begin(), module->end(), &thrower,
-      internal::wasm::kAsmJsOrigin, info->script(), asm_offsets->begin(),
-      asm_offsets->end());
+      internal::wasm::kAsmJsOrigin, info->script(), asm_offsets_vec);
   DCHECK(!compiled.is_null());
   double compile_time = compile_timer.Elapsed().InMillisecondsF();
 
   wasm::AsmTyper::StdlibSet uses = builder.typer()->StdlibUses();
   Handle<FixedArray> uses_array =
       info->isolate()->factory()->NewFixedArray(static_cast<int>(uses.size()));
   int count = 0;
   for (auto i : uses) {
     uses_array->set(count++, Smi::FromInt(i));
   }
@@ skipping 127 matching lines @@
       isolate, MessageTemplate::kAsmJsInstantiated, &location, stext,
       Handle<JSArray>::null());
   message->set_error_level(v8::Isolate::kMessageInfo);
   MessageHandler::ReportMessage(isolate, &location, message);
 
   return module_object;
 }
 
 }  // namespace internal
 }  // namespace v8