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

runtime/vm/pages.h

Index: runtime/vm/pages.h
diff --git a/runtime/vm/pages.h b/runtime/vm/pages.h
index aaa675e2155eeb6d4dca18ad68ccc15946b6542d..926acd33227402b012ecba6365dfd3e4ebe24165 100644
--- a/runtime/vm/pages.h
+++ b/runtime/vm/pages.h
@@ -82,7 +82,6 @@ class HeapPage {
   DISALLOW_IMPLICIT_CONSTRUCTORS(HeapPage);
 };
 
-
 // The history holds the timing information of the last garbage collection
 // runs.
 class PageSpaceGarbageCollectionHistory {
@@ -108,7 +107,6 @@ class PageSpaceGarbageCollectionHistory {
   DISALLOW_COPY_AND_ASSIGN(PageSpaceGarbageCollectionHistory);
 };
 
-
 // PageSpaceController controls the heap size.
 class PageSpaceController {
  public:
@@ -177,7 +175,6 @@ class PageSpaceController {
   DISALLOW_IMPLICIT_CONSTRUCTORS(PageSpaceController);
 };
 
-
 class PageSpace {
  public:
   // TODO(iposva): Determine heap sizes and tune the page size accordingly.