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/bench/BlurRectsBench.cpp b/bench/BlurRectsBench.cpp
index 7b98e00..553cf6b 100644
--- a/bench/BlurRectsBench.cpp
+++ b/bench/BlurRectsBench.cpp
@@ -21,7 +21,7 @@
         fInner = inner;
     }
 
-    virtual const char* onGetName() SK_OVERRIDE {
+    const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
 
@@ -29,7 +29,7 @@
         fName = name;
     }
 
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
         paint.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle, fRadius))->unref();