Keep two empty lines between declarations for cpp files

src/unicode.cc

Index: src/unicode.cc
===================================================================
--- src/unicode.cc	(revision 15486)
+++ src/unicode.cc	(working copy)
@@ -52,14 +52,17 @@
   return table[D * index];
 }
 
+
 static inline uchar GetEntry(int32_t entry) {
   return entry & (kStartBit - 1);
 }
 
+
 static inline bool IsStart(int32_t entry) {
   return (entry & kStartBit) != 0;
 }
 
+
 /**
  * Look up a character in the unicode table using a mix of binary and
  * interpolation search.  For a uniformly distributed array
@@ -106,6 +109,7 @@
   uchar chars[kW];
 };
 
+
 // Look up the mapping for the given character in the specified table,
 // which is of the specified length and uses the specified special case
 // mapping for multi-char mappings.  The next parameter is the character
@@ -456,6 +460,7 @@
   }
 }
 
+
 // Lowercase:            point.category == 'Ll'
 
 static const uint16_t kLowercaseTable0Size = 463;
@@ -567,6 +572,7 @@
   }
 }
 
+
 // Letter:               point.category in ['Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl' ]
 
 static const uint16_t kLetterTable0Size = 435;
@@ -703,6 +709,7 @@
   }
 }
 
+
 // Space:                point.category == 'Zs'
 
 static const uint16_t kSpaceTable0Size = 4;
@@ -724,6 +731,7 @@
   }
 }
 
+
 // Number:               point.category == 'Nd'
 
 static const uint16_t kNumberTable0Size = 56;
@@ -758,6 +766,7 @@
   }
 }
 
+
 // WhiteSpace:           'Ws' in point.properties
 
 static const uint16_t kWhiteSpaceTable0Size = 7;
@@ -779,6 +788,7 @@
   }
 }
 
+
 // LineTerminator:       'Lt' in point.properties
 
 static const uint16_t kLineTerminatorTable0Size = 2;
@@ -800,6 +810,7 @@
   }
 }
 
+
 // CombiningMark:        point.category in ['Mn', 'Mc']
 
 static const uint16_t kCombiningMarkTable0Size = 258;
@@ -871,6 +882,7 @@
   }
 }
 
+
 // ConnectorPunctuation: point.category == 'Pc'
 
 static const uint16_t kConnectorPunctuationTable0Size = 1;