Revert of Fix ImageAnimation constant names after Blink renaming

third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.cpp

Index: third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.cpp
diff --git a/third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.cpp b/third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.cpp
index 0e12da8491b7094abc87fe1dd4647a97b07fd634..9890b7c27a9479b1c639e0dabf838ec7922c3fff 100644
--- a/third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.cpp
+++ b/third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.cpp
@@ -47,10 +47,10 @@
     : ImageDecoder(alpha_option, color_behavior, max_decoded_bytes),
       offset_(offset),
       current_frame_(0),
-      // It would be logical to default to kAnimationNone, but BitmapImage uses
+      // It would be logical to default to kCAnimationNone, but BitmapImage uses
       // that as a signal to never check again, meaning the actual count will
       // never be respected.
-      repetition_count_(kAnimationLoopOnce),
+      repetition_count_(kCAnimationLoopOnce),
       has_alpha_channel_(false),
       current_buffer_saw_alpha_(false) {}
 
@@ -122,7 +122,7 @@
 }
 
 int PNGImageDecoder::RepetitionCount() const {
-  return Failed() ? kAnimationLoopOnce : repetition_count_;
+  return Failed() ? kCAnimationLoopOnce : repetition_count_;
 }
 
 void PNGImageDecoder::InitializeNewFrame(size_t index) {