Use IOSImageDataFetcherWrapper in BrowserViewController

components/image_fetcher/image_data_fetcher.h

Index: components/image_fetcher/image_data_fetcher.h
diff --git a/components/image_fetcher/image_data_fetcher.h b/components/image_fetcher/image_data_fetcher.h
index 92c5a5cf0dc233d7c004adc58387f336115361bf..5383086a519b2aa37324ab4335a5df99ef229d1e 100644
--- a/components/image_fetcher/image_data_fetcher.h
+++ b/components/image_fetcher/image_data_fetcher.h
@@ -14,6 +14,7 @@
 #include "base/memory/ref_counted.h"
 #include "components/data_use_measurement/core/data_use_user_data.h"
 #include "net/url_request/url_fetcher_delegate.h"
+#include "net/url_request/url_request.h"
 #include "url/gurl.h"
 
 namespace net {
@@ -43,6 +44,12 @@ class ImageDataFetcher : public net::URLFetcherDelegate {
   void FetchImageData(const GURL& image_url,
                       const ImageDataFetcherCallback& callback);
 
+  // Like above, but lets the caller set a referrer.
+  void FetchImageData(const GURL& image_url,
+                      const ImageDataFetcherCallback& callback,
+                      const std::string& referrer,
+                      net::URLRequest::ReferrerPolicy referrer_policy);
+
  private:
   struct ImageDataFetcherRequest;