- Remove unused Counters class from isolate.

runtime/vm/isolate.h

 // 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.
 
 #ifndef VM_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/atomic.h"
 #include "vm/base_isolate.h"
 #include "vm/class_table.h"
-#include "vm/counters.h"
 #include "vm/handles.h"
 #include "vm/megamorphic_cache_table.h"
 #include "vm/metrics.h"
 #include "vm/random.h"
 #include "vm/tags.h"
 #include "vm/thread.h"
 #include "vm/os_thread.h"
 #include "vm/timeline.h"
 #include "vm/timer.h"
 #include "vm/trace_buffer.h"
@@ skipping 705 matching lines @@
 
 #define REUSABLE_HANDLE(object)                                                \
   object& object##Handle() const {                                             \
     return *object##_handle_;                                                  \
   }
   REUSABLE_HANDLE_LIST(REUSABLE_HANDLE)
 #undef REUSABLE_HANDLE
 
   static void VisitIsolates(IsolateVisitor* visitor);
 
-  Counters* counters() { return &counters_; }
-
   // Handle service messages until we are told to resume execution.
   void PauseEventHandler();
 
   // DEPRECATED: Use Thread's methods instead. During migration, these default
   // to using the mutator thread (which must also be the current thread).
   Zone* current_zone() const {
     ASSERT(Thread::Current() == mutator_thread_);
     return mutator_thread_->zone();
   }
   void set_current_zone(Zone* zone) {
@@ skipping 158 matching lines @@
   // We use 2 list entries for each registered extension handler.
   enum {
     kRegisteredNameIndex = 0,
     kRegisteredHandlerIndex,
     kRegisteredEntrySize
   };
   RawGrowableObjectArray* registered_service_extension_handlers_;
 
   Metric* metrics_list_head_;
 
-  Counters counters_;
-
   bool compilation_allowed_;
 
   // TODO(23153): Move this out of Isolate/Thread.
   CHA* cha_;
 
   // Isolate list next pointer.
   Isolate* next_;
 
   // Used to wake the isolate when it is in the pause event loop.
   Monitor* pause_loop_monitor_;
@@ skipping 198 matching lines @@
   uint8_t* serialized_message_;
   intptr_t serialized_message_len_;
   Isolate::Flags isolate_flags_;
   bool paused_;
   bool errors_are_fatal_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_