Cleanup: Another round of override fixes.

src/pdf/SkPDFDeviceFlattener.h

Index: src/pdf/SkPDFDeviceFlattener.h
diff --git a/src/pdf/SkPDFDeviceFlattener.h b/src/pdf/SkPDFDeviceFlattener.h
index bb152379962938dcf04ab1c0b7e82bbb7d2f00a6..56f8da720a2aefb6cb5106c19d0064170a2bdc28 100644
--- a/src/pdf/SkPDFDeviceFlattener.h
+++ b/src/pdf/SkPDFDeviceFlattener.h
@@ -30,7 +30,7 @@ public:
     virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode,
                             size_t count, const SkPoint[],
                             const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawRect(const SkDraw&, const SkRect& r, const SkPaint& paint);
+    virtual void drawRect(const SkDraw&, const SkRect& r, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPath(const SkDraw&, const SkPath& origpath,
                           const SkPaint& paint, const SkMatrix* prePathMatrix,
                           bool pathIsMutable) SK_OVERRIDE;