Clean up compiler dispatcher job a bit

BUG=v8:5215
R=vogelheim@chromium.org,marja@chromium.org

Review-Url: https://codereview.chromium.org/2197573002
Cr-Commit-Position: refs/heads/master@{#38174}

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

@@ -27,13 +27,8 @@ CompilerDispatcherJob::CompilerDispatcherJob(Isolate* isolate,
   Handle<SharedFunctionInfo> shared(function_->shared(), isolate_);
   Handle<Script> script(Script::cast(shared->script()), isolate_);
   Handle<String> source(String::cast(script->source()), isolate_);
-  if (source->IsExternalTwoByteString()) {
-    can_parse_on_background_thread_ = true;
-  } else if (source->IsExternalOneByteString()) {
-    can_parse_on_background_thread_ = true;
-  } else {
-    can_parse_on_background_thread_ = false;
-  }
+  can_parse_on_background_thread_ =
+      source->IsExternalTwoByteString() || source->IsExternalOneByteString();
 }
 
 CompilerDispatcherJob::~CompilerDispatcherJob() {
@@ -71,7 +66,7 @@ void CompilerDispatcherJob::PrepareToParseOnMainThread() {
   parse_info_->set_hash_seed(isolate_->heap()->HashSeed());
   parse_info_->set_unicode_cache(unicode_cache_.get());
   parser_.reset(new Parser(parse_info_.get()));
-  status_.SetValue(CompileJobStatus::kReadyToParse);
+  status_ = CompileJobStatus::kReadyToParse;
 }
 
 void CompilerDispatcherJob::Parse() {
@@ -95,7 +90,7 @@ void CompilerDispatcherJob::Parse() {
 
   parse_info_->set_isolate(isolate_);
 
-  status_.SetValue(CompileJobStatus::kParsed);
+  status_ = CompileJobStatus::kParsed;
 }
 
 }  // namespace internal

src/compiler-dispatcher/compiler-dispatcher-job.h

@@ -7,7 +7,6 @@
 
 #include <memory>
 
-#include "src/base/atomic-utils.h"
 #include "src/base/macros.h"
 #include "src/handles.h"
 
@@ -35,7 +34,7 @@ class CompilerDispatcherJob {
                         size_t max_stack_size);
   ~CompilerDispatcherJob();
 
-  CompileJobStatus status() const { return status_.Value(); }
+  CompileJobStatus status() const { return status_; }
   bool can_parse_on_background_thread() const {
     return can_parse_on_background_thread_;
   }
@@ -47,8 +46,7 @@ class CompilerDispatcherJob {
   void Parse();
 
  private:
-  base::AtomicValue<CompileJobStatus> status_ =
-      base::AtomicValue<CompileJobStatus>(CompileJobStatus::kInitial);
+  CompileJobStatus status_ = CompileJobStatus::kInitial;
   Isolate* isolate_;
   Handle<JSFunction> function_;  // Global handle.
   size_t max_stack_size_;

test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc

@@ -21,9 +21,10 @@ class ScriptResource : public v8::String::ExternalOneByteStringResource {
  public:
   ScriptResource(const char* data, size_t length)
       : data_(data), length_(length) {}
+  ~ScriptResource() override = default;
 
-  const char* data() const { return data_; }
-  size_t length() const { return length_; }
+  const char* data() const override { return data_; }
+  size_t length() const override { return length_; }
 
  private:
   const char* data_;