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/PatchGridBench.cpp b/bench/PatchGridBench.cpp
index c250781..0fe12e2 100644
--- a/bench/PatchGridBench.cpp
+++ b/bench/PatchGridBench.cpp
@@ -163,7 +163,7 @@
     }
 
 protected:
-    virtual const char* onGetName() SK_OVERRIDE {
+    const char* onGetName() SK_OVERRIDE {
         SkString vertexMode;
         switch (fVertexMode) {
             case kNone_VertexMode:
@@ -200,7 +200,7 @@
         return fName.c_str();
     }
     
-    virtual void onPreDraw() SK_OVERRIDE {
+    void onPreDraw() SK_OVERRIDE {
         this->setGrid();
         switch (fVertexMode) {
             case kTexCoords_VertexMode:
@@ -214,7 +214,7 @@
         this->setupPaint(&fPaint);
     }
 
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+    void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         this->setScale(canvas);
         for (int i = 0; i < loops; i++) {
             fGrid.draw(canvas, fPaint);