Keep two empty lines between declarations for cpp files

test/cctest/test-assembler-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 601 matching lines @@
   TestRoundingMode(u32_f64, RN,  123456.2,  123456);
   TestRoundingMode(u32_f64, RN, static_cast<double>(kMaxInt), kMaxInt);
   TestRoundingMode(u32_f64, RN, (kMaxInt + 0.49), kMaxInt);
   TestRoundingMode(u32_f64, RN, (kMaxInt + 0.5),
                                 static_cast<uint32_t>(kMaxInt) + 1);
   TestRoundingMode(u32_f64, RN, (kMaxUInt + 0.49), kMaxUInt);
   TestRoundingMode(u32_f64, RN, (kMaxUInt + 0.5), kMaxUInt, true);
   TestRoundingMode(u32_f64, RN, (kMaxUInt + 1.0), kMaxUInt, true);
 }
 
+
 TEST(8) {
   // Test VFP multi load/store with ia_w.
   CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   typedef struct {
     double a;
     double b;
     double c;
@@ skipping 588 matching lines @@
   CHECK_EQ(kArmNanLower32, BitCast<int64_t>(t.add_result) & 0xffffffffu);
   CHECK_EQ(kArmNanUpper32, (BitCast<int64_t>(t.sub_result) >> 32) & 0x7fffffff);
   CHECK_EQ(kArmNanLower32, BitCast<int64_t>(t.sub_result) & 0xffffffffu);
   CHECK_EQ(kArmNanUpper32, (BitCast<int64_t>(t.mul_result) >> 32) & 0x7fffffff);
   CHECK_EQ(kArmNanLower32, BitCast<int64_t>(t.mul_result) & 0xffffffffu);
   CHECK_EQ(kArmNanUpper32, (BitCast<int64_t>(t.div_result) >> 32) & 0x7fffffff);
   CHECK_EQ(kArmNanLower32, BitCast<int64_t>(t.div_result) & 0xffffffffu);
 }
 
 #undef __