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

runtime/vm/thread.h

Index: runtime/vm/thread.h
diff --git a/runtime/vm/thread.h b/runtime/vm/thread.h
index 3a226e4ee583bb912841e21e1ba6d3006e33a63c..7a98f4542b6bc3e76a8d11c5543b6e5ebeb0c7cf 100644
--- a/runtime/vm/thread.h
+++ b/runtime/vm/thread.h
@@ -12,8 +12,8 @@
 #include "vm/globals.h"
 #include "vm/handles.h"
 #include "vm/os_thread.h"
-#include "vm/store_buffer.h"
 #include "vm/runtime_entry_list.h"
+#include "vm/store_buffer.h"
 namespace dart {
 
 class AbstractType;
@@ -74,7 +74,6 @@ class Zone;
   V(TypeArguments)                                                             \
   V(TypeParameter)
 
-
 #if defined(TARGET_ARCH_DBC)
 #define CACHED_VM_STUBS_LIST(V)
 #else
@@ -808,13 +807,11 @@ class Thread : public BaseThread {
   DISALLOW_COPY_AND_ASSIGN(Thread);
 };
 
-
 #if defined(HOST_OS_WINDOWS)
 // Clears the state of the current thread and frees the allocation.
 void WindowsThreadCleanUp();
 #endif
 
-
 // Disable thread interrupts.
 class DisableThreadInterruptsScope : public StackResource {
  public: