Getting rid of Isolate::current_zone() usage. Pass thread instead of isolate where it makes sense.

runtime/vm/profiler_service.h

 // Copyright (c) 2015, 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_PROFILER_SERVICE_H_
 #define VM_PROFILER_SERVICE_H_
 
 #include "vm/allocation.h"
 #include "vm/code_observers.h"
 #include "vm/globals.h"
@@ skipping 282 matching lines @@
     return (kind == kExclusiveCode) || (kind == kInclusiveCode);
   }
 
   static bool IsFunctionTrie(TrieKind kind) {
     return !IsCodeTrie(kind);
   }
 
   explicit Profile(Isolate* isolate);
 
   // Build a filtered model using |filter| with the specified |tag_order|.
-  void Build(SampleFilter* filter, TagOrder tag_order, intptr_t extra_tags = 0);
+  void Build(Thread* thread,
+             SampleFilter* filter, TagOrder tag_order, intptr_t extra_tags = 0);
 
   // After building:
   int64_t min_time() const { return min_time_; }
   int64_t max_time() const { return max_time_; }
   int64_t GetTimeSpan() const {
     return max_time() - min_time();
   }
   intptr_t sample_count() const { return sample_count_; }
 
   ProfileFunction* GetFunction(intptr_t index);
@@ skipping 76 matching lines @@
   static void PrintJSONImpl(Thread* thread,
                             JSONStream* stream,
                             Profile::TagOrder tag_order,
                             intptr_t extra_tags,
                             SampleFilter* filter);
 };
 
 }  // namespace dart
 
 #endif  // VM_PROFILER_SERVICE_H_