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

runtime/vm/timeline.h

Index: runtime/vm/timeline.h
diff --git a/runtime/vm/timeline.h b/runtime/vm/timeline.h
index 0abf0254d91b0cdca4c8dda9dccb7fbfae28cc9a..0cf477cc98dd0c1a720d51278768ead98760e317 100644
--- a/runtime/vm/timeline.h
+++ b/runtime/vm/timeline.h
@@ -137,13 +137,11 @@ class Timeline : public AllStatic {
   friend class ReclaimBlocksIsolateVisitor;
 };
 
-
 struct TimelineEventArgument {
   const char* name;
   char* value;
 };
 
-
 // You should get a |TimelineEvent| from a |TimelineStream|.
 class TimelineEvent {
  public:
@@ -396,7 +394,6 @@ class TimelineEvent {
   DISALLOW_COPY_AND_ASSIGN(TimelineEvent);
 };
 
-
 #ifndef PRODUCT
 #define TIMELINE_FUNCTION_COMPILATION_DURATION(thread, name, function)         \
   TimelineDurationScope tds(thread, Timeline::GetCompilerStream(), name);      \
@@ -461,7 +458,6 @@ class TimelineEventScope : public StackResource {
   DISALLOW_COPY_AND_ASSIGN(TimelineEventScope);
 };
 
-
 class TimelineDurationScope : public TimelineEventScope {
  public:
   TimelineDurationScope(TimelineStream* stream, const char* label);
@@ -479,7 +475,6 @@ class TimelineDurationScope : public TimelineEventScope {
   DISALLOW_COPY_AND_ASSIGN(TimelineDurationScope);
 };
 
-
 class TimelineBeginEndScope : public TimelineEventScope {
  public:
   TimelineBeginEndScope(TimelineStream* stream, const char* label);
@@ -497,7 +492,6 @@ class TimelineBeginEndScope : public TimelineEventScope {
   DISALLOW_COPY_AND_ASSIGN(TimelineBeginEndScope);
 };
 
-
 // A block of |TimelineEvent|s. Not thread safe.
 class TimelineEventBlock {
  public:
@@ -577,7 +571,6 @@ class TimelineEventBlock {
   DISALLOW_COPY_AND_ASSIGN(TimelineEventBlock);
 };
 
-
 class TimelineEventFilter : public ValueObject {
  public:
   TimelineEventFilter(int64_t time_origin_micros = -1,
@@ -609,7 +602,6 @@ class TimelineEventFilter : public ValueObject {
   int64_t time_extent_micros_;
 };
 
-
 class IsolateTimelineEventFilter : public TimelineEventFilter {
  public:
   explicit IsolateTimelineEventFilter(Dart_Port isolate_id,
@@ -632,7 +624,6 @@ class IsolateTimelineEventFilter : public TimelineEventFilter {
   Dart_Port isolate_id_;
 };
 
-
 // Recorder of |TimelineEvent|s.
 class TimelineEventRecorder {
  public:
@@ -684,7 +675,6 @@ class TimelineEventRecorder {
   DISALLOW_COPY_AND_ASSIGN(TimelineEventRecorder);
 };
 
-
 // An abstract recorder that stores events in a buffer of fixed capacity.
 class TimelineEventFixedBufferRecorder : public TimelineEventRecorder {
  public:
@@ -711,7 +701,6 @@ class TimelineEventFixedBufferRecorder : public TimelineEventRecorder {
   intptr_t block_cursor_;
 };
 
-
 // A recorder that stores events in a buffer of fixed capacity. When the buffer
 // is full, new events overwrite old events.
 class TimelineEventRingRecorder : public TimelineEventFixedBufferRecorder {
@@ -726,7 +715,6 @@ class TimelineEventRingRecorder : public TimelineEventFixedBufferRecorder {
   TimelineEventBlock* GetNewBlockLocked();
 };
 
-
 // A recorder that writes events to Android Systrace. Events are also stored in
 // a buffer of fixed capacity. When the buffer is full, new events overwrite
 // old events.
@@ -744,7 +732,6 @@ class TimelineEventSystraceRecorder : public TimelineEventFixedBufferRecorder {
   int systrace_fd_;
 };
 
-
 #if defined(HOST_OS_FUCHSIA)
 // A recorder that sends events to Fuchsia's tracing app. Events are also stored
 // in a buffer of fixed capacity. When the buffer is full, new events overwrite
@@ -763,7 +750,6 @@ class TimelineEventFuchsiaRecorder : public TimelineEventFixedBufferRecorder {
 };
 #endif  // defined(HOST_OS_FUCHSIA)
 
-
 // A recorder that stores events in a buffer of fixed capacity. When the buffer
 // is full, new events are dropped.
 class TimelineEventStartupRecorder : public TimelineEventFixedBufferRecorder {
@@ -778,7 +764,6 @@ class TimelineEventStartupRecorder : public TimelineEventFixedBufferRecorder {
   TimelineEventBlock* GetNewBlockLocked();
 };
 
-
 // An abstract recorder that calls |OnEvent| whenever an event is complete.
 // This should only be used for testing.
 class TimelineEventCallbackRecorder : public TimelineEventRecorder {
@@ -803,7 +788,6 @@ class TimelineEventCallbackRecorder : public TimelineEventRecorder {
   void CompleteEvent(TimelineEvent* event);
 };
 
-
 // A recorder that stores events in chains of blocks of events.
 // NOTE: This recorder will continue to allocate blocks until it exhausts
 // memory.
@@ -832,7 +816,6 @@ class TimelineEventEndlessRecorder : public TimelineEventRecorder {
   friend class TimelineTestHelper;
 };
 
-
 // An iterator for blocks.
 class TimelineEventBlockIterator {
  public:
@@ -852,7 +835,6 @@ class TimelineEventBlockIterator {
   TimelineEventRecorder* recorder_;
 };
 
-
 }  // namespace dart
 
 #endif  // RUNTIME_VM_TIMELINE_H_