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/tests/BitmapHeapTest.cpp b/tests/BitmapHeapTest.cpp
index c7d0972..21ce2f3 100644
--- a/tests/BitmapHeapTest.cpp
+++ b/tests/BitmapHeapTest.cpp
@@ -18,11 +18,11 @@
 struct SimpleFlatController : public SkFlatController {
     SimpleFlatController() : SkFlatController() {}
     ~SimpleFlatController() { fAllocations.freeAll(); }
-    virtual void* allocThrow(size_t bytes) SK_OVERRIDE {
+    void* allocThrow(size_t bytes) SK_OVERRIDE {
         fAllocations.push(sk_malloc_throw(bytes));
         return fAllocations.top();
     }
-    virtual void unalloc(void*) SK_OVERRIDE { }
+    void unalloc(void*) SK_OVERRIDE { }
     void setBitmapStorage(SkBitmapHeap* h) { this->setBitmapHeap(h); }
 private:
     SkTDArray<void*> fAllocations;