[Interpreter] Localize the CanonicalHandleScope to parsing and renumbering.

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 237ccbc1b064b5cf64deb13fb016185a798a738f..a614034c60354d129dd2a83f6678f731a8483c5c 100644
--- a/src/compiler-dispatcher/compiler-dispatcher-job.cc
+++ b/src/compiler-dispatcher/compiler-dispatcher-job.cc
@@ -141,11 +141,6 @@ bool CompilerDispatcherJob::FinalizeParsingOnMainThread() {
 
   DeferredHandleScope scope(isolate_);
   {
-    // Create a canonical handle scope before internalizing parsed values if
-    // compiling bytecode. This is required for off-thread bytecode generation.
-    std::unique_ptr<CanonicalHandleScope> canonical;
-    if (FLAG_ignition) canonical.reset(new CanonicalHandleScope(isolate_));
-
     Handle<SharedFunctionInfo> shared(function_->shared(), isolate_);
     Handle<Script> script(Script::cast(shared->script()), isolate_);
 
@@ -176,16 +171,9 @@ bool CompilerDispatcherJob::PrepareToCompileOnMainThread() {
   compile_info_.reset(new CompilationInfo(parse_info_.get(), function_));
 
   DeferredHandleScope scope(isolate_);
-  {
-    // Create a canonical handle scope before ast numbering if compiling
-    // bytecode. This is required for off-thread bytecode generation.
-    std::unique_ptr<CanonicalHandleScope> canonical;
-    if (FLAG_ignition) canonical.reset(new CanonicalHandleScope(isolate_));
-
-    if (Compiler::Analyze(parse_info_.get())) {
-      compile_job_.reset(
-          Compiler::PrepareUnoptimizedCompilationJob(compile_info_.get()));
-    }
+  if (Compiler::Analyze(parse_info_.get())) {
+    compile_job_.reset(
+        Compiler::PrepareUnoptimizedCompilationJob(compile_info_.get()));
   }
   compile_info_->set_deferred_handles(scope.Detach());