Add SK_OVERRIDE to a few places that are missing it.

src/gpu/GrPathRendering.cpp

Index: src/gpu/GrPathRendering.cpp
diff --git a/src/gpu/GrPathRendering.cpp b/src/gpu/GrPathRendering.cpp
index ed9a1e640f6dda64e11805aa13257e08a1c7ed7f..1b0ce19e5595785f89e7787f6fd997dba1442b1e 100644
--- a/src/gpu/GrPathRendering.cpp
+++ b/src/gpu/GrPathRendering.cpp
@@ -24,11 +24,11 @@ public:
         SkDescriptor::Free(fDesc);
     }
 
-    virtual int getNumPaths() {
+    virtual int getNumPaths() SK_OVERRIDE {
         return fScalerContext->getGlyphCount();
     }
 
-    virtual void generatePath(int glyphID, SkPath* out) {
+    virtual void generatePath(int glyphID, SkPath* out) SK_OVERRIDE {
         SkGlyph skGlyph;
         skGlyph.init(SkGlyph::MakeID(glyphID));
         fScalerContext->getMetrics(&skGlyph);
@@ -37,7 +37,7 @@ public:
         out->transform(fFlipMatrix); // Load glyphs with the inverted y-direction.
     }
 
-    virtual bool isEqualTo(const SkDescriptor& desc) const {
+    virtual bool isEqualTo(const SkDescriptor& desc) const SK_OVERRIDE {
         return fDesc->equals(desc);
     }