VM: Change debug printing of Context to not print the raw-pointer

runtime/vm/object.cc

 // 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.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 13860 matching lines @@
 }
 
 
 const char* Context::ToCString() const {
   if (IsNull()) {
     return "Context (Null)";
   }
   Zone* zone = Thread::Current()->zone();
   const Context& parent_ctx = Context::Handle(parent());
   if (parent_ctx.IsNull()) {
-    return zone->PrintToString("Context@%p num_variables:% " Pd "",
-                               this->raw(), num_variables());
+    return zone->PrintToString("Context num_variables: %" Pd "",
+                               num_variables());
   } else {
     const char* parent_str = parent_ctx.ToCString();
     return zone->PrintToString(
-        "Context@%p num_variables:% " Pd " parent:{ %s }",
-        this->raw(), num_variables(), parent_str);
+        "Context num_variables: %" Pd " parent:{ %s }",
+        num_variables(), parent_str);
   }
 }
 
 
 static void IndentN(int count) {
   for (int i = 0; i < count; i++) {
     THR_Print(" ");
   }
 }
 
@@ skipping 8031 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart