VM: Re-format to use at most one newline between functions

runtime/vm/object_graph.cc

Index: runtime/vm/object_graph.cc
diff --git a/runtime/vm/object_graph.cc b/runtime/vm/object_graph.cc
index ae3678abf7b67dd4e21f3eb0af31c10f051fdb37..1c3373f4200ed3876fd1286003438cfd02c58e1e 100644
--- a/runtime/vm/object_graph.cc
+++ b/runtime/vm/object_graph.cc
@@ -94,15 +94,12 @@ class ObjectGraph::Stack : public ObjectPointerVisitor {
   DISALLOW_COPY_AND_ASSIGN(Stack);
 };
 
-
 RawObject** const ObjectGraph::Stack::kSentinel = NULL;
 
-
 RawObject* ObjectGraph::StackIterator::Get() const {
   return stack_->data_[index_].obj;
 }
 
-
 bool ObjectGraph::StackIterator::MoveToParent() {
   intptr_t parent = stack_->Parent(index_);
   if (parent == Stack::kNoParent) {
@@ -113,7 +110,6 @@ bool ObjectGraph::StackIterator::MoveToParent() {
   }
 }
 
-
 intptr_t ObjectGraph::StackIterator::OffsetFromParentInWords() const {
   intptr_t parent_index = stack_->Parent(index_);
   if (parent_index == Stack::kNoParent) {
@@ -136,7 +132,6 @@ intptr_t ObjectGraph::StackIterator::OffsetFromParentInWords() const {
   }
 }
 
-
 class Unmarker : public ObjectVisitor {
  public:
   Unmarker() {}
@@ -156,17 +151,14 @@ class Unmarker : public ObjectVisitor {
   DISALLOW_COPY_AND_ASSIGN(Unmarker);
 };
 
-
 ObjectGraph::ObjectGraph(Thread* thread) : StackResource(thread) {
   // The VM isolate has all its objects pre-marked, so iterating over it
   // would be a no-op.
   ASSERT(thread->isolate() != Dart::vm_isolate());
 }
 
-
 ObjectGraph::~ObjectGraph() {}
 
-
 void ObjectGraph::IterateObjects(ObjectGraph::Visitor* visitor) {
   NoSafepointScope no_safepoint_scope_;
   Stack stack(isolate());
@@ -175,7 +167,6 @@ void ObjectGraph::IterateObjects(ObjectGraph::Visitor* visitor) {
   Unmarker::UnmarkAll(isolate());
 }
 
-
 void ObjectGraph::IterateObjectsFrom(const Object& root,
                                      ObjectGraph::Visitor* visitor) {
   NoSafepointScope no_safepoint_scope_;
@@ -186,7 +177,6 @@ void ObjectGraph::IterateObjectsFrom(const Object& root,
   Unmarker::UnmarkAll(isolate());
 }
 
-
 class InstanceAccumulator : public ObjectVisitor {
  public:
   InstanceAccumulator(ObjectGraph::Stack* stack, intptr_t class_id)
@@ -206,7 +196,6 @@ class InstanceAccumulator : public ObjectVisitor {
   DISALLOW_COPY_AND_ASSIGN(InstanceAccumulator);
 };
 
-
 void ObjectGraph::IterateObjectsFrom(intptr_t class_id,
                                      ObjectGraph::Visitor* visitor) {
   NoSafepointScope no_safepoint_scope_;
@@ -219,7 +208,6 @@ void ObjectGraph::IterateObjectsFrom(intptr_t class_id,
   Unmarker::UnmarkAll(isolate());
 }
 
-
 class SizeVisitor : public ObjectGraph::Visitor {
  public:
   SizeVisitor() : size_(0) {}
@@ -238,7 +226,6 @@ class SizeVisitor : public ObjectGraph::Visitor {
   intptr_t size_;
 };
 
-
 class SizeExcludingObjectVisitor : public SizeVisitor {
  public:
   explicit SizeExcludingObjectVisitor(const Object& skip) : skip_(skip) {}
@@ -248,7 +235,6 @@ class SizeExcludingObjectVisitor : public SizeVisitor {
   const Object& skip_;
 };
 
-
 class SizeExcludingClassVisitor : public SizeVisitor {
  public:
   explicit SizeExcludingClassVisitor(intptr_t skip) : skip_(skip) {}
@@ -260,7 +246,6 @@ class SizeExcludingClassVisitor : public SizeVisitor {
   const intptr_t skip_;
 };
 
-
 intptr_t ObjectGraph::SizeRetainedByInstance(const Object& obj) {
   HeapIterationScope iteration_scope(true);
   SizeVisitor total;
@@ -272,7 +257,6 @@ intptr_t ObjectGraph::SizeRetainedByInstance(const Object& obj) {
   return size_total - size_excluding_obj;
 }
 
-
 intptr_t ObjectGraph::SizeReachableByInstance(const Object& obj) {
   HeapIterationScope iteration_scope(true);
   SizeVisitor total;
@@ -280,7 +264,6 @@ intptr_t ObjectGraph::SizeReachableByInstance(const Object& obj) {
   return total.size();
 }
 
-
 intptr_t ObjectGraph::SizeRetainedByClass(intptr_t class_id) {
   HeapIterationScope iteration_scope(true);
   SizeVisitor total;
@@ -292,7 +275,6 @@ intptr_t ObjectGraph::SizeRetainedByClass(intptr_t class_id) {
   return size_total - size_excluding_class;
 }
 
-
 intptr_t ObjectGraph::SizeReachableByClass(intptr_t class_id) {
   HeapIterationScope iteration_scope(true);
   SizeVisitor total;
@@ -300,7 +282,6 @@ intptr_t ObjectGraph::SizeReachableByClass(intptr_t class_id) {
   return total.size();
 }
 
-
 class RetainingPathVisitor : public ObjectGraph::Visitor {
  public:
   // We cannot use a GrowableObjectArray, since we must not trigger GC.
@@ -388,7 +369,6 @@ class RetainingPathVisitor : public ObjectGraph::Visitor {
   bool was_last_array_;
 };
 
-
 intptr_t ObjectGraph::RetainingPath(Object* obj, const Array& path) {
   NoSafepointScope no_safepoint_scope_;
   HeapIterationScope iteration_scope(true);
@@ -402,7 +382,6 @@ intptr_t ObjectGraph::RetainingPath(Object* obj, const Array& path) {
   return visitor.length();
 }
 
-
 class InboundReferencesVisitor : public ObjectVisitor,
                                  public ObjectPointerVisitor {
  public:
@@ -466,7 +445,6 @@ class InboundReferencesVisitor : public ObjectVisitor,
   intptr_t length_;
 };
 
-
 intptr_t ObjectGraph::InboundReferences(Object* obj, const Array& references) {
   Object& scratch = Object::Handle();
   NoSafepointScope no_safepoint_scope;
@@ -475,7 +453,6 @@ intptr_t ObjectGraph::InboundReferences(Object* obj, const Array& references) {
   return visitor.length();
 }
 
-
 static void WritePtr(RawObject* raw, WriteStream* stream) {
   ASSERT(raw->IsHeapObject());
   ASSERT(raw->IsOldObject());
@@ -487,7 +464,6 @@ static void WritePtr(RawObject* raw, WriteStream* stream) {
   stream->WriteUnsigned(addr / kObjectAlignment);
 }
 
-
 class WritePointerVisitor : public ObjectPointerVisitor {
  public:
   WritePointerVisitor(Isolate* isolate,
@@ -522,7 +498,6 @@ class WritePointerVisitor : public ObjectPointerVisitor {
   intptr_t count_;
 };
 
-
 static void WriteHeader(RawObject* raw,
                         intptr_t size,
                         intptr_t cid,
@@ -533,7 +508,6 @@ static void WriteHeader(RawObject* raw,
   stream->WriteUnsigned(cid);
 }
 
-
 class WriteGraphVisitor : public ObjectGraph::Visitor {
  public:
   WriteGraphVisitor(Isolate* isolate,
@@ -570,7 +544,6 @@ class WriteGraphVisitor : public ObjectGraph::Visitor {
   intptr_t count_;
 };
 
-
 static void IterateUserFields(ObjectPointerVisitor* visitor) {
   Thread* thread = Thread::Current();
   // Scope to prevent handles create here from appearing as stack references.
@@ -605,7 +578,6 @@ static void IterateUserFields(ObjectPointerVisitor* visitor) {
   }
 }
 
-
 intptr_t ObjectGraph::Serialize(WriteStream* stream,
                                 SnapshotRoots roots,
                                 bool collect_garbage) {