Fix a variety of service protocol bugs.

runtime/vm/unit_test.h

 // Copyright (c) 2011, 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_UNIT_TEST_H_
 #define VM_UNIT_TEST_H_
 
 #include "include/dart_native_api.h"
 
 #include "platform/globals.h"
@@ skipping 503 matching lines @@
       if (!value) {                                                            \
         dart::Expect(__FILE__, __LINE__).Fail("expected True, but was '%s'\n", \
             #handle);                                                          \
       }                                                                        \
     } else {                                                                   \
       dart::Expect(__FILE__, __LINE__).Fail("expected True, but was '%s'\n",   \
           #handle);                                                            \
     }                                                                          \
   } while (0)
 
+
+// Elide a substring which starts with some prefix and ends with a ".
+//
+// This is used to remove non-deterministic or fragile substrings from
+// JSON output.
+//
+// For example:
+//
+//    prefix = "classes"
+//    in = "\"id\":\"classes/46\""
+//
+// Yields:
+//
+//    out = "\"id\":\"\""
+//
+void ElideJSONSubstring(const char* prefix, const char* in, char* out);
+
+
 }  // namespace dart
 
 #endif  // VM_UNIT_TEST_H_