Remove GC prologue and epilogue callbacks.

runtime/vm/scavenger.h

 // Copyright (c) 2012, 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 RUNTIME_VM_SCAVENGER_H_
 #define RUNTIME_VM_SCAVENGER_H_
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/dart.h"
@@ skipping 171 matching lines @@
     ASSERT(to_->Contains(result));
     ASSERT((result & kObjectAlignmentMask) == object_alignment_);
     top += size;
     ASSERT((to_->Contains(top)) || (top == to_->end()));
     thread->set_top(top);
     return result;
   }
 
   // Collect the garbage in this scavenger.
   void Scavenge();
-  void Scavenge(bool invoke_api_callbacks);
 
   // Promote all live objects.
   void Evacuate();
 
   uword top() { return top_; }
   uword end() { return end_; }
 
   void set_top(uword value) { top_ = value; }
   void set_end(uword value) {
     ASSERT(to_->end() == value);
@@ skipping 49 matching lines @@
     kProcessToSpace = 4,
     kIterateWeaks = 5,
     // Data
     kStoreBufferEntries = 0,
     kDataUnused1 = 1,
     kDataUnused2 = 2,
     kToKBAfterStoreBuffer = 3
   };
 
   uword FirstObjectStart() const { return to_->start() | object_alignment_; }
-  SemiSpace* Prologue(Isolate* isolate, bool invoke_api_callbacks);
+  SemiSpace* Prologue(Isolate* isolate);
   void IterateStoreBuffers(Isolate* isolate, ScavengerVisitor* visitor);
   void IterateObjectIdTable(Isolate* isolate, ScavengerVisitor* visitor);
   void IterateRoots(Isolate* isolate, ScavengerVisitor* visitor);
   void IterateWeakProperties(Isolate* isolate, ScavengerVisitor* visitor);
   void IterateWeakReferences(Isolate* isolate, ScavengerVisitor* visitor);
   void IterateWeakRoots(Isolate* isolate, HandleVisitor* visitor);
   void ProcessToSpace(ScavengerVisitor* visitor);
   void EnqueueWeakProperty(RawWeakProperty* raw_weak);
   uword ProcessWeakProperty(RawWeakProperty* raw_weak,
                             ScavengerVisitor* visitor);
-  void Epilogue(Isolate* isolate, SemiSpace* from, bool invoke_api_callbacks);
+  void Epilogue(Isolate* isolate, SemiSpace* from);
 
   bool IsUnreachable(RawObject** p);
 
   // During a scavenge we need to remember the promoted objects.
   // This is implemented as a stack of objects at the end of the to space. As
   // object sizes are always greater than sizeof(uword) and promoted objects do
   // not consume space in the to space they leave enough room for this stack.
   void PushToPromotedStack(uword addr) {
     ASSERT(scavenging_);
     end_ -= sizeof(addr);
@@ skipping 58 matching lines @@
   Mutex* space_lock_;
   friend class ScavengerVisitor;
   friend class ScavengerWeakVisitor;
 
   DISALLOW_COPY_AND_ASSIGN(Scavenger);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_SCAVENGER_H_