Move ImageFetcher to its own target.

ios/chrome/browser/net/image_fetcher/image_fetcher.mm

Index: ios/chrome/browser/net/image_fetcher/image_fetcher.mm
diff --git a/ios/chrome/browser/net/image_fetcher.mm b/ios/chrome/browser/net/image_fetcher/image_fetcher.mm
similarity index 83%
rename from ios/chrome/browser/net/image_fetcher.mm
rename to ios/chrome/browser/net/image_fetcher/image_fetcher.mm
index f8bc5d1d08dbc180dcd8b5baf069bce8b9f521b4..53a87e0c4acfeadc6fa0710b0faf1a71ea67c55e 100644
--- a/ios/chrome/browser/net/image_fetcher.mm
+++ b/ios/chrome/browser/net/image_fetcher/image_fetcher.mm
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#import "ios/chrome/browser/net/image_fetcher.h"
+#import "ios/chrome/browser/net/image_fetcher/image_fetcher.h"
 
 #import <Foundation/Foundation.h>
 #include <stddef.h>
@@ -38,6 +38,7 @@ class WebpDecoderDelegate : public webp_transcode::WebpDecoder::Delegate {
     DCHECK(decoded_image_);
     [decoded_image_ appendData:data];
   }
+
  private:
   ~WebpDecoderDelegate() override {}
   base::scoped_nsobject<NSMutableData> decoded_image_;
@@ -85,19 +86,19 @@ void ImageFetcher::StartDownload(
   net::URLFetcher* fetcher =
       net::URLFetcher::Create(url, net::URLFetcher::GET, this).release();
   downloads_in_progress_[fetcher] = [callback copy];
-  fetcher->SetLoadFlags(
-      net::LOAD_DO_NOT_SEND_COOKIES | net::LOAD_DO_NOT_SAVE_COOKIES |
-      net::LOAD_DO_NOT_SEND_AUTH_DATA);
+  fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
+                        net::LOAD_DO_NOT_SAVE_COOKIES |
+                        net::LOAD_DO_NOT_SEND_AUTH_DATA);
   fetcher->SetRequestContext(request_context_getter_.get());
   fetcher->SetReferrer(referrer);
   fetcher->SetReferrerPolicy(referrer_policy);
   fetcher->Start();
 }
 
-void ImageFetcher::StartDownload(
-    const GURL& url, ImageFetchedCallback callback) {
-  ImageFetcher::StartDownload(
-      url, callback, std::string(), net::URLRequest::NEVER_CLEAR_REFERRER);
+void ImageFetcher::StartDownload(const GURL& url,
+                                 ImageFetchedCallback callback) {
+  ImageFetcher::StartDownload(url, callback, std::string(),
+                              net::URLRequest::NEVER_CLEAR_REFERRER);
 }
 
 // Delegate callback that is called when URLFetcher completes.  If the image
@@ -124,8 +125,8 @@ void ImageFetcher::OnURLFetchComplete(const net::URLFetcher* fetcher) {
   // code has no meaning, because there is no actual server (data is encoded
   // directly in the URL). In that case, set the response code to 200 (OK).
   const GURL& original_url = fetcher->GetOriginalURL();
-  const int http_response_code = original_url.SchemeIs("data") ?
-      200 : fetcher->GetResponseCode();
+  const int http_response_code =
+      original_url.SchemeIs("data") ? 200 : fetcher->GetResponseCode();
   if (http_response_code != 200) {
     (callback.get())(original_url, http_response_code, nil);
     return;
@@ -146,14 +147,10 @@ void ImageFetcher::OnURLFetchComplete(const net::URLFetcher* fetcher) {
     std::string mime_type;
     fetcher->GetResponseHeaders()->GetMimeType(&mime_type);
     if (mime_type == kWEBPMimeType) {
-      base::PostTaskAndReplyWithResult(task_runner_.get(),
-                                       FROM_HERE,
-                                       base::Bind(&DecodeWebpImage, data),
-                                       base::Bind(&ImageFetcher::RunCallback,
-                                                  weak_factory_.GetWeakPtr(),
-                                                  callback,
-                                                  original_url,
-                                                  http_response_code));
+      base::PostTaskAndReplyWithResult(
+          task_runner_.get(), FROM_HERE, base::Bind(&DecodeWebpImage, data),
+          base::Bind(&ImageFetcher::RunCallback, weak_factory_.GetWeakPtr(),
+                     callback, original_url, http_response_code));
       return;
     }
   }