Remove trailing enum comma, I see arm compile failures due to this

src/serialize.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_SERIALIZE_H_
 #define V8_SERIALIZE_H_
 
 #include "src/hashmap.h"
 #include "src/heap-profiler.h"
 #include "src/isolate.h"
@@ skipping 963 matching lines @@
  private:
   explicit SerializedCodeData(ScriptData* data);
 
   enum SanityCheckResult {
     CHECK_SUCCESS = 0,
     MAGIC_NUMBER_MISMATCH = 1,
     VERSION_MISMATCH = 2,
     SOURCE_MISMATCH = 3,
     CPU_FEATURES_MISMATCH = 4,
     FLAGS_MISMATCH = 5,
-    CHECKSUM_MISMATCH = 6,
+    CHECKSUM_MISMATCH = 6
   };
 
   SanityCheckResult SanityCheck(String* source) const;
 
   uint32_t SourceHash(String* source) const { return source->length(); }
 
   static const uint32_t kMagicNumber = 0xC0D1F1ED;
 
   // The data header consists of uint32_t-sized entries:
   // [ 0] magic number
@@ skipping 20 matching lines @@
       kNumInternalizedStringsOffset + kInt32Size;
   static const int kNumCodeStubKeysOffset = kNumReservationsOffset + kInt32Size;
   static const int kPayloadLengthOffset = kNumCodeStubKeysOffset + kInt32Size;
   static const int kChecksum1Offset = kPayloadLengthOffset + kInt32Size;
   static const int kChecksum2Offset = kChecksum1Offset + kInt32Size;
   static const int kHeaderSize = kChecksum2Offset + kInt32Size;
 };
 } }  // namespace v8::internal
 
 #endif  // V8_SERIALIZE_H_