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

runtime/bin/thread.h

Index: runtime/bin/thread.h
diff --git a/runtime/bin/thread.h b/runtime/bin/thread.h
index 6b804441abbf13e14b4946bd8ec95c81f58c87d3..8e31cb60aaf9760cb7fcc345d65302dae25845a9 100644
--- a/runtime/bin/thread.h
+++ b/runtime/bin/thread.h
@@ -12,8 +12,8 @@ namespace bin {
 class Thread;
 class Mutex;
 class Monitor;
-}
-}
+}  // namespace bin
+}  // namespace dart
 
 // Declare the OS-specific types ahead of defining the generic classes.
 #if defined(HOST_OS_ANDROID)
@@ -63,7 +63,6 @@ class Thread {
   DISALLOW_IMPLICIT_CONSTRUCTORS(Thread);
 };
 
-
 class Mutex {
  public:
   Mutex();
@@ -79,7 +78,6 @@ class Mutex {
   DISALLOW_COPY_AND_ASSIGN(Mutex);
 };
 
-
 class Monitor {
  public:
   enum WaitResult { kNotified, kTimedOut };
@@ -109,5 +107,4 @@ class Monitor {
 }  // namespace bin
 }  // namespace dart
 
-
 #endif  // RUNTIME_BIN_THREAD_H_