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/RegionContainBench.cpp b/bench/RegionContainBench.cpp
index f6d8142..3a09809 100644
--- a/bench/RegionContainBench.cpp
+++ b/bench/RegionContainBench.cpp
@@ -45,14 +45,14 @@
         fB.setRect(0, 0, H, W);
     }
 
-    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+    bool isSuitableFor(Backend backend) SK_OVERRIDE {
         return backend == kNonRendering_Backend;
     }
 
 protected:
-    virtual const char* onGetName() SK_OVERRIDE { return fName.c_str(); }
+    const char* onGetName() SK_OVERRIDE { return fName.c_str(); }
 
-    virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
+    void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
         Proc proc = fProc;
 
         for (int i = 0; i < loops; ++i) {