Pass isolates explicitly.

runtime/vm/flow_graph_builder.h

 // Copyright (c) 2012, 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.
 
 #ifndef VM_FLOW_GRAPH_BUILDER_H_
 #define VM_FLOW_GRAPH_BUILDER_H_
 
 #include "platform/assert.h"
 #include "platform/globals.h"
 #include "vm/allocation.h"
@@ skipping 200 matching lines @@
 
   NestedStatement* nesting_stack() const { return nesting_stack_; }
 
   // When compiling for OSR, remove blocks that are not reachable from the
   // OSR entry point.
   void PruneUnreachable();
 
   // Returns address where the constant 'value' is stored or 0 if not found.
   static uword FindDoubleConstant(double value);
 
+  Isolate* isolate() const { return parsed_function()->isolate(); }
+
  private:
   friend class NestedStatement;  // Explicit access to nesting_stack_.
 
   intptr_t parameter_count() const {
     return num_copied_params_ + num_non_copied_params_;
   }
   intptr_t variable_count() const {
     return parameter_count() + num_stack_locals_;
   }
 
@@ skipping 211 matching lines @@
                         const AbstractType& dst_type,
                         const String& dst_name);
 
   // Helpers for allocating and deallocating temporary locals on top of the
   // expression stack.
   LocalVariable* EnterTempLocalScope(Value* value);
   Definition* ExitTempLocalScope(LocalVariable* var);
 
   void BuildLetTempExpressions(LetNode* node);
 
+  Isolate* isolate() const { return owner()->isolate(); }
+
  private:
   friend class TempLocalScope;  // For ReturnDefinition.
 
   // Helper to drop the result value.
   virtual void ReturnValue(Value* value) {
     Do(new DropTempsInstr(0, value));
   }
 
   // Specify a definition of the final result.  Adds the definition to
   // the graph, but normally overridden in subclasses.
@@ skipping 116 matching lines @@
   // Output parameters.
   GrowableArray<TargetEntryInstr**> true_successor_addresses_;
   GrowableArray<TargetEntryInstr**> false_successor_addresses_;
 
   intptr_t condition_token_pos_;
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_BUILDER_H_