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

src/images/SkImageDecoder_ktx.cpp

Index: src/images/SkImageDecoder_ktx.cpp
diff --git a/src/images/SkImageDecoder_ktx.cpp b/src/images/SkImageDecoder_ktx.cpp
index 8ef592adc99889e4369222e3705520280cd80391..7248950450dc60d5c5ba0c007ceb708d856c472a 100644
--- a/src/images/SkImageDecoder_ktx.cpp
+++ b/src/images/SkImageDecoder_ktx.cpp
@@ -36,12 +36,12 @@ class SkKTXImageDecoder : public SkImageDecoder {
 public:
     SkKTXImageDecoder() { }
 
-    virtual Format getFormat() const SK_OVERRIDE {
+    Format getFormat() const SK_OVERRIDE {
         return kKTX_Format;
     }
 
 protected:
-    virtual Result onDecode(SkStream* stream, SkBitmap* bm, Mode) SK_OVERRIDE;
+    Result onDecode(SkStream* stream, SkBitmap* bm, Mode) SK_OVERRIDE;
 
 private:
     typedef SkImageDecoder INHERITED;
@@ -251,7 +251,7 @@ SkImageDecoder::Result SkKTXImageDecoder::onDecode(SkStream* stream, SkBitmap* b
 
 class SkKTXImageEncoder : public SkImageEncoder {
 protected:
-    virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) SK_OVERRIDE;
+    bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) SK_OVERRIDE;
 
 private:
     virtual bool encodePKM(SkWStream* stream, const SkData *data);