Remove isolate parameter when allocating handles

runtime/vm/coverage.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 "vm/coverage.h"
 
 #include "include/dart_api.h"
 
 #include "vm/compiler.h"
 #include "vm/isolate.h"
@@ skipping 213 matching lines @@
           break;
         }
         CompileAndAdd(function, hits_or_sites, pos_to_line, as_call_sites);
         i++;
       }
     }
   }
 }
 
 
-void CodeCoverage::Write(Isolate* isolate) {
+void CodeCoverage::Write(Thread* thread) {
   if (FLAG_coverage_dir == NULL) {
     return;
   }
 
   Dart_FileOpenCallback file_open = Isolate::file_open_callback();
   Dart_FileWriteCallback file_write = Isolate::file_write_callback();
   Dart_FileCloseCallback file_close = Isolate::file_close_callback();
   if ((file_open == NULL) || (file_write == NULL) || (file_close == NULL)) {
     return;
   }
 
   JSONStream stream;
-  PrintJSON(isolate, &stream, NULL, false);
+  PrintJSON(thread, &stream, NULL, false);
 
   intptr_t pid = OS::ProcessId();
-  char* filename = OS::SCreate(Thread::Current()->zone(),
+  char* filename = OS::SCreate(thread->zone(),
       "%s/dart-cov-%" Pd "-%" Pd64 ".json",
-      FLAG_coverage_dir, pid, isolate->main_port());
+      FLAG_coverage_dir, pid, thread->isolate()->main_port());
   void* file = (*file_open)(filename, true);
   if (file == NULL) {
     OS::Print("Failed to write coverage file: %s\n", filename);
     return;
   }
   (*file_write)(stream.buffer()->buf(), stream.buffer()->length(), file);
   (*file_close)(file);
 }
 
 
-void CodeCoverage::PrintJSON(Isolate* isolate,
+void CodeCoverage::PrintJSON(Thread* thread,
                              JSONStream* stream,
                              CoverageFilter* filter,
                              bool as_call_sites) {
   CoverageFilterAll default_filter;
   if (filter == NULL) {
     filter = &default_filter;
   }
   const GrowableObjectArray& libs = GrowableObjectArray::Handle(
-      isolate, isolate->object_store()->libraries());
+      thread->zone(),
+      thread->isolate()->object_store()->libraries());
   Library& lib = Library::Handle();
   Class& cls = Class::Handle();
   JSONObject coverage(stream);
   coverage.AddProperty("type", "CodeCoverage");
   {
     JSONArray jsarr(&coverage, "coverage");
     for (int i = 0; i < libs.Length(); i++) {
       lib ^= libs.At(i);
       ClassDictionaryIterator it(lib, ClassDictionaryIterator::kIteratePrivate);
       while (it.HasNext()) {
         cls = it.GetNextClass();
         ASSERT(!cls.IsNull());
         PrintClass(lib, cls, jsarr, filter, as_call_sites);
       }
     }
   }
 }
 
 
 }  // namespace dart