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/gm/bitmapsource.cpp b/gm/bitmapsource.cpp
index f6badde..1c35a0b 100644
--- a/gm/bitmapsource.cpp
+++ b/gm/bitmapsource.cpp
@@ -17,7 +17,7 @@
     }
 
 protected:
-    virtual SkString onShortName() SK_OVERRIDE {
+    SkString onShortName() SK_OVERRIDE {
         return SkString("bitmapsource");
     }
 
@@ -34,9 +34,9 @@
         canvas.drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
     }
 
-    virtual SkISize onISize() SK_OVERRIDE { return SkISize::Make(500, 150); }
+    SkISize onISize() SK_OVERRIDE { return SkISize::Make(500, 150); }
 
-    virtual void onOnceBeforeDraw() SK_OVERRIDE {
+    void onOnceBeforeDraw() SK_OVERRIDE {
         this->makeBitmap();
     }
 
@@ -49,7 +49,7 @@
         canvas->restore();
     }
 
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(SkCanvas* canvas) SK_OVERRIDE {
         canvas->clear(0x00000000);
         {
             SkRect srcRect = SkRect::MakeXYWH(20, 20, 30, 30);