PATCH (not to be comitted): Support for printing instruction statistics

runtime/vm/snapshot.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 RUNTIME_VM_SNAPSHOT_H_
 #define RUNTIME_VM_SNAPSHOT_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/bitfield.h"
@@ skipping 717 matching lines @@
 
   int32_t GetObjectOffsetFor(RawObject* raw_object);
 
   virtual void Write(uint8_t* vmisolate_buffer,
                      intptr_t vmisolate_length,
                      uint8_t* isolate_buffer,
                      intptr_t isolate_length) = 0;
   virtual intptr_t text_size() = 0;
   virtual intptr_t data_size() = 0;
 
+  void DumpCombinedCodeStatistics() const;
+
  protected:
   struct InstructionsData {
     explicit InstructionsData(RawInstructions* insns,
                               RawCode* code,
                               intptr_t offset)
         : raw_insns_(insns), raw_code_(code), offset_(offset) {}
 
     union {
       RawInstructions* raw_insns_;
       const Instructions* insns_;
@@ skipping 268 matching lines @@
  private:
   SnapshotWriter* writer_;
   bool as_references_;
 
   DISALLOW_COPY_AND_ASSIGN(SnapshotWriterVisitor);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_SNAPSHOT_H_