Add a basic compiler dispatcher

src/compiler-dispatcher/compiler-dispatcher-job.cc

Index: src/compiler-dispatcher/compiler-dispatcher-job.cc
diff --git a/src/compiler-dispatcher/compiler-dispatcher-job.cc b/src/compiler-dispatcher/compiler-dispatcher-job.cc
index 40ea26fb8e9f1485eb2a118f1713533ee8f811f3..e5af4e41f4b144be865b89461e8181397a338b92 100644
--- a/src/compiler-dispatcher/compiler-dispatcher-job.cc
+++ b/src/compiler-dispatcher/compiler-dispatcher-job.cc
@@ -21,10 +21,11 @@ namespace v8 {
 namespace internal {
 
 CompilerDispatcherJob::CompilerDispatcherJob(Isolate* isolate,
+                                             CompilerDispatcherTracer* tracer,
                                              Handle<SharedFunctionInfo> shared,
                                              size_t max_stack_size)
     : isolate_(isolate),
-      tracer_(isolate_->compiler_dispatcher_tracer()),
+      tracer_(tracer),
       shared_(Handle<SharedFunctionInfo>::cast(
           isolate_->global_handles()->Create(*shared))),
       max_stack_size_(max_stack_size),
@@ -44,6 +45,11 @@ CompilerDispatcherJob::~CompilerDispatcherJob() {
   i::GlobalHandles::Destroy(Handle<Object>::cast(shared_).location());
 }
 
+bool CompilerDispatcherJob::IsProcessing(
+    Handle<SharedFunctionInfo> shared) const {
+  return *shared_ == *shared;
+}
+
 void CompilerDispatcherJob::PrepareToParseOnMainThread() {
   DCHECK(ThreadId::Current().Equals(isolate_->thread_id()));
   DCHECK(status() == CompileJobStatus::kInitial);