harmony-scoping: Implement StoreIC handler for stores to global contexts.

src/hydrogen.h

 // Copyright 2012 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.
 
 #ifndef V8_HYDROGEN_H_
 #define V8_HYDROGEN_H_
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 1860 matching lines @@
   void BuildCreateAllocationMemento(HValue* previous_object,
                                     HValue* previous_object_size,
                                     HValue* payload);
 
   HInstruction* BuildConstantMapCheck(Handle<JSObject> constant);
   HInstruction* BuildCheckPrototypeMaps(Handle<JSObject> prototype,
                                         Handle<JSObject> holder);
 
   HInstruction* BuildGetNativeContext(HValue* closure);
   HInstruction* BuildGetNativeContext();
+  HInstruction* BuildGetGlobalContext(int context_index);
   HInstruction* BuildGetArrayFunction();
 
  protected:
   void SetSourcePosition(int position) {
     DCHECK(position != RelocInfo::kNoPosition);
     position_.set_position(position - start_position_);
   }
 
   void EnterInlinedSource(int start_position, int id) {
     if (FLAG_hydrogen_track_positions) {
@@ skipping 1019 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_