Move the Kernel string offsets into the VM's heap.

runtime/vm/kernel.cc

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/kernel.h"
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 namespace dart {
 
 namespace kernel {
@@ skipping 13 matching lines @@
   delete[] line_starts_;
 }
 
 
 SourceTable::~SourceTable() {
   delete[] sources_;
 }
 
 
 CanonicalName::CanonicalName()
-    : parent_(NULL), name_(NULL), is_referenced_(false) {}
+    : parent_(NULL), name_index_(-1), is_referenced_(false) {}
 
 
 CanonicalName::~CanonicalName() {
   for (intptr_t i = 0; i < children_.length(); ++i) {
     delete children_[i];
   }
 }
 
 
 CanonicalName* CanonicalName::NewRoot() {
   return new CanonicalName();
 }
 
 
-CanonicalName* CanonicalName::AddChild(String* name) {
+CanonicalName* CanonicalName::AddChild(intptr_t name_index) {
   CanonicalName* child = new CanonicalName();
   child->parent_ = this;
-  child->name_ = name;
+  child->name_index_ = name_index;
   children_.Add(child);
   return child;
 }
 
 
 Node::~Node() {}
 
 
 TreeNode::~TreeNode() {}
 
@@ skipping 1161 matching lines @@
 
 void FunctionType::AcceptDartTypeVisitor(DartTypeVisitor* visitor) {
   visitor->VisitFunctionType(this);
 }
 
 
 void FunctionType::VisitChildren(Visitor* visitor) {
   VisitList(&type_parameters(), visitor);
   VisitList(&positional_parameters(), visitor);
   for (int i = 0; i < named_parameters().length(); ++i) {
-    named_parameters()[i]->second()->AcceptDartTypeVisitor(visitor);
+    named_parameters()[i]->type()->AcceptDartTypeVisitor(visitor);
   }
   return_type()->AcceptDartTypeVisitor(visitor);
 }
 
 
 TypeParameterType::~TypeParameterType() {}
 
 
 void TypeParameterType::AcceptDartTypeVisitor(DartTypeVisitor* visitor) {
   visitor->VisitTypeParameterType(this);
@@ skipping 44 matching lines @@
 
 void Program::VisitChildren(Visitor* visitor) {
   VisitList(&libraries(), visitor);
 }
 
 
 }  // namespace kernel
 
 }  // namespace dart
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)