Remove some leftovers of full-codegen's generators implementation.

src/objects.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <memory>
 #include <sstream>
@@ skipping 19738 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 int JSGeneratorObject::source_position() const {
   CHECK(is_suspended());
-  AbstractCode* code;
-  int code_offset;
-  if (function()->shared()->HasBytecodeArray()) {
-    // New-style generators.
-    DCHECK(!function()->shared()->HasBaselineCode());
-    code_offset = Smi::cast(input_or_debug_pos())->value();
-    // The stored bytecode offset is relative to a different base than what
-    // is used in the source position table, hence the subtraction.
-    code_offset -= BytecodeArray::kHeaderSize - kHeapObjectTag;
-    code = AbstractCode::cast(function()->shared()->bytecode_array());
-  } else {
-    // Old-style generators.
-    DCHECK(function()->shared()->HasBaselineCode());
-    code_offset = continuation();
-    CHECK(0 <= code_offset);
-    CHECK(code_offset < function()->code()->instruction_size());
-    code = AbstractCode::cast(function()->shared()->code());
-  }
+  DCHECK(function()->shared()->HasBytecodeArray());
+  DCHECK(!function()->shared()->HasBaselineCode());
+  int code_offset = Smi::cast(input_or_debug_pos())->value();
+  // The stored bytecode offset is relative to a different base than what
+  // is used in the source position table, hence the subtraction.
+  code_offset -= BytecodeArray::kHeaderSize - kHeapObjectTag;
+  AbstractCode* code =
+      AbstractCode::cast(function()->shared()->bytecode_array());
   return code->SourcePosition(code_offset);
 }
 
 // static
 AccessCheckInfo* AccessCheckInfo::Get(Isolate* isolate,
                                       Handle<JSObject> receiver) {
   DisallowHeapAllocation no_gc;
   DCHECK(receiver->map()->is_access_check_needed());
   Object* maybe_constructor = receiver->map()->GetConstructor();
   // Might happen for a detached context.
@@ skipping 648 matching lines @@
       // depend on this.
       return DICTIONARY_ELEMENTS;
     }
     DCHECK_LE(kind, LAST_ELEMENTS_KIND);
     return kind;
   }
 }
 
 }  // namespace internal
 }  // namespace v8