Fix use of history timers in background threads.

src/wasm/wasm-objects.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/wasm/wasm-objects.h"
 #include "src/utils.h"
 
 #include "src/assembler-inl.h"
 #include "src/base/iterator.h"
 #include "src/compiler/wasm-compiler.h"
@@ skipping 784 matching lines @@
     // We parse the module again directly from the module bytes, so
     // the underlying storage must not be moved meanwhile.
     DisallowHeapAllocation no_allocation;
     SeqOneByteString* module_bytes = shared->module_bytes();
     const byte* start =
         reinterpret_cast<const byte*>(module_bytes->GetCharsAddress());
     const byte* end = start + module_bytes->length();
     // TODO(titzer): remember the module origin in the compiled_module
     // For now, we assume serialized modules did not originate from asm.js.
     ModuleResult result =
-        DecodeWasmModule(isolate, start, end, false, kWasmOrigin);
+        SyncDecodeWasmModule(isolate, start, end, false, kWasmOrigin);
     CHECK(result.ok());
     CHECK_NOT_NULL(result.val);
     // Take ownership of the WasmModule and immediately transfer it to the
     // WasmModuleWrapper below.
     module = result.val.release();
   }
 
   Handle<WasmModuleWrapper> module_wrapper =
       WasmModuleWrapper::New(isolate, module);
 
@@ skipping 762 matching lines @@
   if (!array->get(kWrapperInstanceObject)->IsWeakCell()) return false;
   Isolate* isolate = array->GetIsolate();
   if (!array->get(kNextInstanceWrapper)->IsUndefined(isolate) &&
       !array->get(kNextInstanceWrapper)->IsFixedArray())
     return false;
   if (!array->get(kPreviousInstanceWrapper)->IsUndefined(isolate) &&
       !array->get(kPreviousInstanceWrapper)->IsFixedArray())
     return false;
   return true;
 }