Use IOSImageDataFetcherWrapper

ios/public/provider/chrome/browser/native_app_launcher/native_app_metadata.h

Index: ios/public/provider/chrome/browser/native_app_launcher/native_app_metadata.h
diff --git a/ios/public/provider/chrome/browser/native_app_launcher/native_app_metadata.h b/ios/public/provider/chrome/browser/native_app_launcher/native_app_metadata.h
index 349a5bdfcf2ac95e0ced90ff598a0136e44df827..ff74a94fe8feb18571426156e75f8a28378aed62 100644
--- a/ios/public/provider/chrome/browser/native_app_launcher/native_app_metadata.h
+++ b/ios/public/provider/chrome/browser/native_app_launcher/native_app_metadata.h
@@ -13,6 +13,10 @@
 class GURL;
 @class UIImage;
 
+namespace image_fetcher {
+class IOSImageDataFetcherWrapper;
+}
+
 namespace net {
 class URLRequestContextGetter;
 }
@@ -59,10 +63,17 @@ class URLRequestContextGetter;
 // Returns the URL to test if the app is installed.
 - (NSURL*)appURLforURL:(NSURL*)url;
 
+// Deprecated. Use fetchSmallIconWithImageFetcher:completionBlock: instead.
 // Calls |block| with the application icon. |contextGetter| must not be nil.
 - (void)fetchSmallIconWithContext:(net::URLRequestContextGetter*)contextGetter

[gambard, 2017/02/02 10:34:07]

Kept for downstream compatibility.

[gambard, 2017/02/02 10:46:02]

Wrong CL order. This is not needed.
Removed.

                   completionBlock:(void (^)(UIImage*))block;
 
+// Calls |block| with the application icon. |imageFetcher| must be kept alive
+// during the fetch.
+- (void)fetchSmallIconWithImageFetcher:
+            (image_fetcher::IOSImageDataFetcherWrapper*)imageFetcher
+                       completionBlock:(void (^)(UIImage*))block;
+
 // Returns whether this native application can open the |url|.
 - (BOOL)canOpenURL:(const GURL&)url;