Keep two empty lines between declarations for cpp files

test/cctest/test-lockers.cc

Index: test/cctest/test-lockers.cc
===================================================================
--- test/cctest/test-lockers.cc	(revision 15486)
+++ test/cctest/test-lockers.cc	(working copy)
@@ -96,6 +96,7 @@
   Persistent<v8::Context> context_;
 };
 
+
 // Migrates an isolate from one thread to another
 TEST(KangarooIsolates) {
   v8::Isolate* isolate = v8::Isolate::New();
@@ -114,6 +115,7 @@
   thread1->Join();
 }
 
+
 static void CalcFibAndCheck() {
   Local<Value> v = CompileRun("function fib(n) {"
                               "  if (n <= 2) return 1;"
@@ -192,6 +194,7 @@
   v8::Isolate* isolate_;
 };
 
+
 static void StartJoinAndDeleteThreads(const i::List<JoinableThread*>& threads) {
   for (int i = 0; i < threads.length(); i++) {
     threads[i]->Start();
@@ -242,6 +245,7 @@
  private:
 };
 
+
 // Run many threads each accessing its own isolate without locking
 TEST(MultithreadedParallelIsolates) {
 #if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_MIPS
@@ -280,6 +284,7 @@
   v8::Isolate* isolate_;
 };
 
+
 // Run  many threads with nested locks
 TEST(IsolateNestedLocking) {
 #if V8_TARGET_ARCH_MIPS
@@ -321,6 +326,7 @@
   v8::Isolate* isolate2_;
 };
 
+
 // Run parallel threads that lock and access different isolates in parallel
 TEST(SeparateIsolatesLocksNonexclusive) {
 #if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_MIPS
@@ -397,6 +403,7 @@
   v8::Isolate* isolate_;
 };
 
+
 // Use unlocker inside of a Locker, multiple threads.
 TEST(LockerUnlocker) {
 #if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_MIPS
@@ -450,6 +457,7 @@
   v8::Isolate* isolate_;
 };
 
+
 // Use Unlocker inside two Lockers.
 TEST(LockTwiceAndUnlock) {
 #if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_MIPS
@@ -517,6 +525,7 @@
   v8::Isolate* isolate2_;
 };
 
+
 // Lock two isolates and unlock one of them.
 TEST(LockAndUnlockDifferentIsolates) {
   v8::Isolate* isolate1 = v8::Isolate::New();
@@ -571,6 +580,7 @@
   v8::Persistent<v8::Context> context_;
 };
 
+
 // Locker inside an Unlocker inside a Locker.
 TEST(LockUnlockLockMultithreaded) {
 #if V8_TARGET_ARCH_MIPS
@@ -626,6 +636,7 @@
   v8::Persistent<v8::Context> context_;
 };
 
+
 // Locker inside an Unlocker inside a Locker for default isolate.
 TEST(LockUnlockLockDefaultIsolateMultithreaded) {
 #if V8_TARGET_ARCH_MIPS
@@ -696,6 +707,7 @@
   const char** extension_names_;
 };
 
+
 // Test installing extensions in separate isolates concurrently.
 // http://code.google.com/p/v8/issues/detail?id=1821
 TEST(ExtensionsRegistration) {