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

This fixes every case where virtual and SK_OVERRIDE were on the same line,
which should be the bulk of cases.  We'll have to manually clean up the rest
over time unless I level up in regexes.

for f in (find . -type f); perl -p -i -e 's/virtual (.*)SK_OVERRIDE/\1SK_OVERRIDE/g' $f; end

BUG=skia:

Review URL: https://codereview.chromium.org/806653007
diff --git a/src/gpu/GrDistanceFieldTextContext.h b/src/gpu/GrDistanceFieldTextContext.h
index 8f73b06..c2d0b6d 100644
--- a/src/gpu/GrDistanceFieldTextContext.h
+++ b/src/gpu/GrDistanceFieldTextContext.h
@@ -50,7 +50,7 @@
 
     GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&, bool enable);
 
-    virtual bool canDraw(const SkPaint& paint, const SkMatrix& viewMatrix) SK_OVERRIDE;
+    bool canDraw(const SkPaint& paint, const SkMatrix& viewMatrix) SK_OVERRIDE;
 
     virtual void onDrawText(const GrPaint&, const SkPaint&, const SkMatrix& viewMatrix,
                             const char text[], size_t byteLength,