Keep two empty lines between declarations for cpp files

test/cctest/test-object-observe.cc

Index: test/cctest/test-object-observe.cc
===================================================================
--- test/cctest/test-object-observe.cc	(revision 15486)
+++ test/cctest/test-object-observe.cc	(working copy)
@@ -54,6 +54,7 @@
 };
 }
 
+
 TEST(PerIsolateState) {
   HarmonyIsolate isolate;
   HandleScope scope(isolate.GetIsolate());
@@ -94,6 +95,7 @@
   CHECK_EQ(3, CompileRun("count")->Int32Value());
 }
 
+
 TEST(EndOfMicrotaskDelivery) {
   HarmonyIsolate isolate;
   HandleScope scope(isolate.GetIsolate());
@@ -107,6 +109,7 @@
   CHECK_EQ(1, CompileRun("count")->Int32Value());
 }
 
+
 TEST(DeliveryOrdering) {
   HarmonyIsolate isolate;
   HandleScope scope(isolate.GetIsolate());
@@ -138,6 +141,7 @@
   CHECK_EQ(3, CompileRun("ordering[2]")->Int32Value());
 }
 
+
 TEST(DeliveryOrderingReentrant) {
   HarmonyIsolate isolate;
   HandleScope scope(isolate.GetIsolate());
@@ -169,6 +173,7 @@
   CHECK_EQ(2, CompileRun("ordering[1]")->Int32Value());
 }
 
+
 TEST(DeliveryOrderingDeliverChangeRecords) {
   HarmonyIsolate isolate;
   HandleScope scope(isolate.GetIsolate());
@@ -193,6 +198,7 @@
   CHECK_EQ(2, CompileRun("ordering[3]")->Int32Value());
 }
 
+
 TEST(ObjectHashTableGrowth) {
   HarmonyIsolate isolate;
   HandleScope scope(isolate.GetIsolate());
@@ -222,6 +228,7 @@
   CHECK(CompileRun("ran")->BooleanValue());
 }
 
+
 TEST(GlobalObjectObservation) {
   HarmonyIsolate isolate;
   LocalContext context;
@@ -290,6 +297,7 @@
   Handle<Value> old_value;
 };
 
+
 // TODO(adamk): Use this helper elsewhere in this file.
 static void ExpectRecords(Handle<Value> records,
                           const RecordExpectation expectations[],
@@ -360,6 +368,7 @@
   EXPECT_RECORDS(CompileRun("records"), expected_records);
 }
 
+
 TEST(HiddenPrototypeObservation) {
   HarmonyIsolate isolate;
   HandleScope scope(isolate.GetIsolate());