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/samplecode/SampleOvalTest.cpp b/samplecode/SampleOvalTest.cpp
index ef9c20d..b3ea88c 100644
--- a/samplecode/SampleOvalTest.cpp
+++ b/samplecode/SampleOvalTest.cpp
@@ -100,7 +100,7 @@
         }
     }
 
-    virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERRIDE {
+    SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERRIDE {
         this->inval(NULL);
         return NULL;
     }