SkNonCopyable should be used with private inheritance.

This is mostly s/public SkNoncopyable/SkNoncopyable/g.

Two classes (SkDrawLooper::Context and SkPicture::OperationList) don't actually work with SkNoncopyable because they introduce a virtual destructor.  I added SkNoncopyableVirtual to make them work as intended.  Sort of questionable whether they really need to be noncopyable in the first place, but I guess it doesn't hurt to keep the behavior the same.

BUG=skia:
R=reed@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/226183018

git-svn-id: http://skia.googlecode.com/svn/trunk@14081 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrTextureStripAtlas.h b/src/gpu/effects/GrTextureStripAtlas.h
index e06e273..5227cc3 100644
--- a/src/gpu/effects/GrTextureStripAtlas.h
+++ b/src/gpu/effects/GrTextureStripAtlas.h
@@ -79,7 +79,7 @@
      * The state of a single row in our cache, next/prev pointers allow these to be chained
      * together to represent LRU status
      */
-    struct AtlasRow : public SkNoncopyable {
+    struct AtlasRow : SkNoncopyable {
         AtlasRow() : fKey(kEmptyAtlasRowKey), fLocks(0), fNext(NULL), fPrev(NULL) { }
         // GenerationID of the bitmap that is represented by this row, 0xffffffff means "empty"
         uint32_t fKey;