[parser] Remove obsolete "asm_function_scope".

R=marja@chromium.org

Change-Id: I91da3f653cda2ca428be578b4cf9a37e784c70d8
Reviewed-on: https://chromium-review.googlesource.com/667108Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48025}

src/ast/scopes.cc

@@ -668,11 +668,9 @@ void DeclarationScope::Analyze(ParseInfo* info) {
   // 1) top-level code,
   // 2) a function/eval/module on the top-level
   // 3) a function/eval in a scope that was already resolved.
-  // 4) an asm.js function
   DCHECK(scope->scope_type() == SCRIPT_SCOPE ||
          scope->outer_scope()->scope_type() == SCRIPT_SCOPE ||
-         scope->outer_scope()->already_resolved_ ||
-         (info->asm_function_scope() && scope->is_function_scope()));
+         scope->outer_scope()->already_resolved_);
 
   // The outer scope is never lazy.
   scope->set_should_eager_compile();

src/parsing/parse-info.cc

@@ -22,7 +22,6 @@ ParseInfo::ParseInfo(AccountingAllocator* zone_allocator)
       extension_(nullptr),
       compile_options_(ScriptCompiler::kNoCompileOptions),
       script_scope_(nullptr),
-      asm_function_scope_(nullptr),
       unicode_cache_(nullptr),
       stack_limit_(0),
       hash_seed_(0),

src/parsing/parse-info.h

@@ -120,11 +120,6 @@ class V8_EXPORT_PRIVATE ParseInfo {
     script_scope_ = script_scope;
   }
 
-  DeclarationScope* asm_function_scope() const { return asm_function_scope_; }
-  void set_asm_function_scope(DeclarationScope* scope) {
-    asm_function_scope_ = scope;
-  }
-
   AstValueFactory* ast_value_factory() const {
     DCHECK(ast_value_factory_.get());
     return ast_value_factory_.get();
@@ -263,7 +258,6 @@ class V8_EXPORT_PRIVATE ParseInfo {
   v8::Extension* extension_;
   ScriptCompiler::CompileOptions compile_options_;
   DeclarationScope* script_scope_;
-  DeclarationScope* asm_function_scope_;
   UnicodeCache* unicode_cache_;
   uintptr_t stack_limit_;
   uint32_t hash_seed_;

src/parsing/parser.cc

@@ -727,12 +727,7 @@ FunctionLiteral* Parser::ParseFunction(Isolate* isolate, ParseInfo* info,
     timer.Start();
   }
   DeserializeScopeChain(info, info->maybe_outer_scope_info());
-  if (info->asm_function_scope()) {
-    original_scope_ = info->asm_function_scope();
-    factory()->set_zone(info->zone());
-  } else {
-    DCHECK_EQ(factory()->zone(), info->zone());
-  }
+  DCHECK_EQ(factory()->zone(), info->zone());
 
   // Initialize parser state.
   Handle<String> name(shared_info->name());