Begin migrating the vm service from a rest-style interface to a json-rpc style interface.

runtime/vm/profiler.cc

 // Copyright (c) 2013, 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 "platform/address_sanitizer.h"
 #include "platform/memory_sanitizer.h"
 #include "platform/utils.h"
 
 #include "vm/allocation.h"
 #include "vm/atomic.h"
@@ skipping 521 matching lines @@
       JSONObject func(&obj, "function");
       func.AddProperty("type", "@Function");
       func.AddProperty("kind", "Tag");
       obj.AddPropertyF("id", "functions/tag-%" Px "", start());
       func.AddProperty("name", name());
     }
   }
 
   void PrintToJSONArray(Isolate* isolate, JSONArray* events, bool full) {
     JSONObject obj(events);
-    obj.AddProperty("type", "CodeRegion");
     obj.AddProperty("kind", KindToCString(kind()));
     obj.AddPropertyF("inclusive_ticks", "%" Pd "", inclusive_ticks());
     obj.AddPropertyF("exclusive_ticks", "%" Pd "", exclusive_ticks());
     if (kind() == kDartCode) {
       // Look up code in Dart heap.
       Code& code = Code::Handle(isolate);
       code ^= Code::LookupCode(start());
       if (code.IsNull()) {
         // Code is a stub in the Vm isolate.
         code ^= Code::LookupCodeInVmIsolate(start());
@@ skipping 944 matching lines @@
                                                   &tag_code_table);
       {
         // Build CodeRegion callers.
         ScopeStopwatch sw("CodeRegionTableCallersBuilder");
         build_callers.Build();
       }
       {
         ScopeStopwatch sw("CodeTableStream");
         // Serialize to JSON.
         JSONObject obj(stream);
-        obj.AddProperty("type", "Profile");
+        obj.AddProperty("type", "CpuProfile");
         obj.AddProperty("id", "profile");
         obj.AddProperty("samples", samples);
         obj.AddProperty("depth", static_cast<intptr_t>(FLAG_profile_depth));
         obj.AddProperty("period", static_cast<intptr_t>(FLAG_profile_period));
         obj.AddProperty("timeSpan",
                         MicrosecondsToSeconds(builder.TimeDeltaMicros()));
         {
           JSONArray exclusive_trie(&obj, "exclusive_trie");
           CodeRegionTrieNode* root = build_trie.root();
           ASSERT(root != NULL);
@@ skipping 564 matching lines @@
                                             state.pc,
                                             state.fp,
                                             sp);
       stackWalker.walk();
 #endif
     }
   }
 }
 
 }  // namespace dart