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

runtime/vm/instructions_ia32.h

Index: runtime/vm/instructions_ia32.h
diff --git a/runtime/vm/instructions_ia32.h b/runtime/vm/instructions_ia32.h
index d408a5ace735a42ee022321b3899a9eef931a1dc..2bf8510f72965251a8af10038d862515fd2093b2 100644
--- a/runtime/vm/instructions_ia32.h
+++ b/runtime/vm/instructions_ia32.h
@@ -60,7 +60,6 @@ class InstructionPattern : public ValueObject {
   DISALLOW_COPY_AND_ASSIGN(InstructionPattern);
 };
 
-
 class CallPattern : public InstructionPattern<CallPattern> {
  public:
   explicit CallPattern(uword pc) : InstructionPattern(pc) {}
@@ -83,13 +82,11 @@ class CallPattern : public InstructionPattern<CallPattern> {
     return kCallPattern;
   }
 
-
  private:
   static const int kLengthInBytes = 5;
   DISALLOW_COPY_AND_ASSIGN(CallPattern);
 };
 
-
 class ReturnPattern : public InstructionPattern<ReturnPattern> {
  public:
   explicit ReturnPattern(uword pc) : InstructionPattern(pc) {}
@@ -104,7 +101,6 @@ class ReturnPattern : public InstructionPattern<ReturnPattern> {
   static const int kLengthInBytes = 1;
 };
 
-
 // push ebp
 // mov ebp, esp
 class ProloguePattern : public InstructionPattern<ProloguePattern> {
@@ -122,7 +118,6 @@ class ProloguePattern : public InstructionPattern<ProloguePattern> {
   static const int kLengthInBytes = 3;
 };
 
-
 // mov ebp, esp
 class SetFramePointerPattern
     : public InstructionPattern<SetFramePointerPattern> {