[ObjC ARC] Converts ios/chrome/browser/webp_transcode:unit_tests to ARC.Automatically generated A…

ios/chrome/browser/webp_transcode/webp_decoder_unittest.mm

Index: ios/chrome/browser/webp_transcode/webp_decoder_unittest.mm
diff --git a/ios/chrome/browser/webp_transcode/webp_decoder_unittest.mm b/ios/chrome/browser/webp_transcode/webp_decoder_unittest.mm
index 8ea01d91217de905078c4fbe731cf2a524d8b35d..e7b67f7da910b0be592815eea126361c67a9419e 100644
--- a/ios/chrome/browser/webp_transcode/webp_decoder_unittest.mm
+++ b/ios/chrome/browser/webp_transcode/webp_decoder_unittest.mm
@@ -25,6 +25,10 @@
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace webp_transcode {
 namespace {
 
@@ -171,11 +175,11 @@ TEST_F(WebpDecoderTest, DecodeToJpeg) {
 #endif
   // Load a WebP image from disk.
   base::scoped_nsobject<NSData> webp_image(
-      [LoadImage(base::FilePath("test.webp")) retain]);
+      LoadImage(base::FilePath("test.webp")));
   ASSERT_TRUE(webp_image != nil);
   // Load reference image.
   base::scoped_nsobject<NSData> jpg_image(
-      [LoadImage(base::FilePath("test.jpg")) retain]);
+      LoadImage(base::FilePath("test.jpg")));
   ASSERT_TRUE(jpg_image != nil);
   // Convert to JPEG.
   EXPECT_CALL(*delegate_, OnFinishedDecoding(true)).Times(1);
@@ -195,11 +199,11 @@ TEST_F(WebpDecoderTest, DecodeToPng) {
 #endif
   // Load a WebP image from disk.
   base::scoped_nsobject<NSData> webp_image(
-      [LoadImage(base::FilePath("test_alpha.webp")) retain]);
+      LoadImage(base::FilePath("test_alpha.webp")));
   ASSERT_TRUE(webp_image != nil);
   // Load reference image.
   base::scoped_nsobject<NSData> png_image(
-      [LoadImage(base::FilePath("test_alpha.png")) retain]);
+      LoadImage(base::FilePath("test_alpha.png")));
   ASSERT_TRUE(png_image != nil);
   // Convert to PNG.
   EXPECT_CALL(*delegate_, OnFinishedDecoding(true)).Times(1);
@@ -219,11 +223,11 @@ TEST_F(WebpDecoderTest, DecodeToTiff) {
 #endif
   // Load a WebP image from disk.
   base::scoped_nsobject<NSData> webp_image(
-      [LoadImage(base::FilePath("test_small.webp")) retain]);
+      LoadImage(base::FilePath("test_small.webp")));
   ASSERT_TRUE(webp_image != nil);
   // Load reference image.
   base::scoped_nsobject<NSData> tiff_image(
-      [LoadImage(base::FilePath("test_small.tiff")) retain]);
+      LoadImage(base::FilePath("test_small.tiff")));
   ASSERT_TRUE(tiff_image != nil);
   // Convert to TIFF.
   EXPECT_CALL(*delegate_, OnFinishedDecoding(true)).Times(1);
@@ -243,11 +247,11 @@ TEST_F(WebpDecoderTest, StreamedDecode) {
 #endif
   // Load a WebP image from disk.
   base::scoped_nsobject<NSData> webp_image(
-      [LoadImage(base::FilePath("test.webp")) retain]);
+      LoadImage(base::FilePath("test.webp")));
   ASSERT_TRUE(webp_image != nil);
   // Load reference image.
   base::scoped_nsobject<NSData> jpg_image(
-      [LoadImage(base::FilePath("test.jpg")) retain]);
+      LoadImage(base::FilePath("test.jpg")));
   ASSERT_TRUE(jpg_image != nil);
   // Convert to JPEG in chunks.
   EXPECT_CALL(*delegate_, OnFinishedDecoding(true)).Times(1);
@@ -257,11 +261,11 @@ TEST_F(WebpDecoderTest, StreamedDecode) {
   unsigned int num_chunks = 0;
   while ([webp_image length] > kChunkSize) {
     base::scoped_nsobject<NSData> chunk(
-        [[webp_image subdataWithRange:NSMakeRange(0, kChunkSize)] retain]);
+        [webp_image subdataWithRange:NSMakeRange(0, kChunkSize)]);
     decoder_->OnDataReceived(chunk);
-    webp_image.reset([[webp_image
-        subdataWithRange:NSMakeRange(kChunkSize, [webp_image length] -
-                                                     kChunkSize)] retain]);
+    webp_image.reset([webp_image
+        subdataWithRange:NSMakeRange(kChunkSize,
+                                     [webp_image length] - kChunkSize)]);
     ++num_chunks;
   }
   if ([webp_image length] > 0u) {