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/src/pipe/SkGPipeRead.cpp b/src/pipe/SkGPipeRead.cpp
index dab6178..aa108e6 100644
--- a/src/pipe/SkGPipeRead.cpp
+++ b/src/pipe/SkGPipeRead.cpp
@@ -162,7 +162,7 @@
      * these SkBitmaps for bitmap shaders. Used only in cross process mode
      * without a shared heap.
      */
-    virtual SkBitmap* getBitmap(int32_t index) const SK_OVERRIDE {
+    SkBitmap* getBitmap(int32_t index) const SK_OVERRIDE {
         SkASSERT(shouldFlattenBitmaps(fFlags));
         return fBitmaps[index];
     }
@@ -170,7 +170,7 @@
     /**
      * Needed to be a non-abstract subclass of SkBitmapHeapReader.
      */
-    virtual void releaseRef(int32_t) SK_OVERRIDE {}
+    void releaseRef(int32_t) SK_OVERRIDE {}
 
     void setSharedHeap(SkBitmapHeap* heap) {
         SkASSERT(!shouldFlattenBitmaps(fFlags) || NULL == heap);