Revert of Use std::unique_ptr.

src/core/SkGlyphCache.h

Index: src/core/SkGlyphCache.h
diff --git a/src/core/SkGlyphCache.h b/src/core/SkGlyphCache.h
index 8d6bae699244e6f92e47417e8987f129ab511a59..2c49530e7c72ab5ac7adaa6a7e1023c4476dda41 100644
--- a/src/core/SkGlyphCache.h
+++ b/src/core/SkGlyphCache.h
@@ -272,7 +272,7 @@
     AuxProcRec*            fAuxProcList;
 };
 
-class SkAutoGlyphCache : public std::unique_ptr<SkGlyphCache, SkGlyphCache::AttachCacheFunctor> {
+class SkAutoGlyphCache : public skstd::unique_ptr<SkGlyphCache, SkGlyphCache::AttachCacheFunctor> {
 public:
     /** deprecated: use get() */
     SkGlyphCache* getCache() const { return this->get(); }
@@ -294,7 +294,7 @@
         : INHERITED(paint.detachCache(surfaceProps, fakeGamma, matrix))
     {}
 private:
-    using INHERITED = std::unique_ptr<SkGlyphCache, SkGlyphCache::AttachCacheFunctor>;
+    using INHERITED = skstd::unique_ptr<SkGlyphCache, SkGlyphCache::AttachCacheFunctor>;
 };
 
 class SkAutoGlyphCacheNoGamma : public SkAutoGlyphCache {