Report repetition count in SkCodec

src/codec/SkGifCodec.cpp

Index: src/codec/SkGifCodec.cpp
diff --git a/src/codec/SkGifCodec.cpp b/src/codec/SkGifCodec.cpp
index ec965cb3339e23d575c6b24a6c468c570e578557..3cad36c032b954246a26ce767903be9f77dc4809 100644
--- a/src/codec/SkGifCodec.cpp
+++ b/src/codec/SkGifCodec.cpp
@@ -127,16 +127,22 @@ SkGifCodec::SkGifCodec(const SkEncodedInfo& encodedInfo, const SkImageInfo& imag
     reader->setClient(this);
 }
 
-std::vector<SkCodec::FrameInfo> SkGifCodec::onGetFrameInfo() {
+bool SkGifCodec::onGetFrameInfo(std::vector<FrameInfo>* frameInfos, int* repetitionCount) {
     fReader->parse(SkGifImageReader::SkGIFFrameCountQuery);
     const size_t size = fReader->imagesCount();
-    std::vector<FrameInfo> result(size);
-    for (size_t i = 0; i < size; i++) {
-        const SkGIFFrameContext* frameContext = fReader->frameContext(i);
-        result[i].fDuration = frameContext->delayTime();
-        result[i].fRequiredFrame = frameContext->getRequiredFrame();
+    if (frameInfos) {
+        frameInfos->resize(size);
+        for (size_t i = 0; i < size; i++) {
+            const SkGIFFrameContext* frameContext = fReader->frameContext(i);
+            auto& info = frameInfos->operator[](i);
+            info.fDuration = frameContext->delayTime();
+            info.fRequiredFrame = frameContext->getRequiredFrame();
+        }
     }
-    return result;
+    if (repetitionCount) {
+        *repetitionCount = fReader->loopCount();
+    }
+    return true;
 }
 
 void SkGifCodec::initializeColorTable(const SkImageInfo& dstInfo, size_t frameIndex,