V8ValueConverter::ToV8Value should not trigger setters

BUG=606390

Review URL: https://codereview.chromium.org/1918793003

Cr-Commit-Position: refs/heads/master@{#390045}
bool V8ValueConverter::Strategy::FromV8Array(
    v8::Local<v8::Array> value,
    base::Value** out,
    v8::Isolate* isolate,
    const FromV8ValueCallback& callback) const {
  return false;
}

bool V8ValueConverter::Strategy::FromV8Array(
    v8::Local<v8::Array> value,
    base::Value** out,
    v8::Isolate* isolate,
    const FromV8ValueCallback& callback) const {
  return false;
}
