Fix up all the easy virtual ... SK_OVERRIDE cases.

src/utils/SkSHA1.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkSHA1_DEFINED
 #define SkSHA1_DEFINED
 
 #include "SkTypes.h"
 #include "SkEndian.h"
 #include "SkStream.h"
 
 //The following macros can be defined to affect the SHA1 code generated.
 //SK_SHA1_CLEAR_DATA causes all intermediate state to be overwritten with 0's.
 //SK_CPU_BENDIAN allows 32 bit <=> 8 bit conversions without copies (if alligned).
 //SK_CPU_FAST_UNALIGNED_ACCESS allows 32 bit <=> 8 bit conversions without copies if SK_CPU_BENDIAN.
 
 class SkSHA1 : public SkWStream {
 public:
     SkSHA1();
 
     /** Processes input, adding it to the digest.
      *  Note that this treats the buffer as a series of uint8_t values.
      */
-    virtual bool write(const void* buffer, size_t size) SK_OVERRIDE {
+    bool write(const void* buffer, size_t size) SK_OVERRIDE {
         update(reinterpret_cast<const uint8_t*>(buffer), size);
         return true;
     }
 
-    virtual size_t bytesWritten() const SK_OVERRIDE { return SkToSizeT(this->byteCount); }
+    size_t bytesWritten() const SK_OVERRIDE { return SkToSizeT(this->byteCount); }
 
     /** Processes input, adding it to the digest. Calling this after finish is undefined. */
     void update(const uint8_t* input, size_t length);
 
     struct Digest {
         uint8_t data[20];
     };
 
     /** Computes and returns the digest. */
     void finish(Digest& digest);
 
 private:
     // number of bytes, modulo 2^64
     uint64_t byteCount;
 
     // state (ABCDE)
     uint32_t state[5];
 
     // input buffer
     uint8_t buffer[64];
 };
 
 #endif