Rename fletch -> dartino

src/vm/tick_sampler.h

 // Copyright (c) 2015, the Dartino 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.md file.
 
 #ifndef SRC_VM_TICK_SAMPLER_H_
 #define SRC_VM_TICK_SAMPLER_H_
 
 #include "src/shared/atomic.h"
 #include "src/shared/globals.h"
 #include "src/shared/platform.h"
 
-namespace fletch {
+namespace dartino {
 
 class Process;
 
 // TickSampler periodically samples and collects the state of the VM.
 class TickSampler {
  public:
   // Initializes the sampler, called once.
   static void Setup();
   // Teardown the sampler, reverses the SetUp call.
   static void Teardown();
 
   // Tells whether the profiler is active.
   static bool is_active() { return is_active_; }
 
  private:
   static Atomic<bool> is_active_;
 };
 
-}  // namespace fletch
+}  // namespace dartino
 
 #endif  // SRC_VM_TICK_SAMPLER_H_