Save image should download the original image when Data Saver is enabled.

chrome/browser/ui/android/context_menu_helper.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/android/context_menu_helper.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_headers.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/android/download_controller_android.h"
 #include "content/public/common/context_menu_params.h"
 #include "jni/ContextMenuHelper_jni.h"
 #include "jni/ContextMenuParams_jni.h"
 #include "ui/gfx/geometry/point.h"
 
+using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertUTF8ToJavaString;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::ScopedJavaLocalRef;
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(ContextMenuHelper);
 
 ContextMenuHelper::ContextMenuHelper(content::WebContents* web_contents)
     : web_contents_(web_contents) {
   JNIEnv* env = base::android::AttachCurrentThread();
   java_obj_.Reset(
@@ skipping 62 matching lines @@
           image_was_fetched_lo_fi,
           params.is_editable,
           ConvertUTF8ToJavaString(env, sanitizedReferrer.spec()).obj(),
           params.referrer_policy);
 
   return jmenu_info;
 }
 
 void ContextMenuHelper::OnStartDownload(JNIEnv* env,
                                         jobject obj,
-                                        jboolean jis_link) {
+                                        jboolean jis_link,
+                                        jstring jheaders) {
+  std::string headers(ConvertJavaStringToUTF8(env, jheaders));
   content::DownloadControllerAndroid::Get()->StartContextMenuDownload(
       context_menu_params_,
       web_contents_,
-      jis_link);
+      jis_link,
+      headers);
 }
 
 bool RegisterContextMenuHelper(JNIEnv* env) {
   return RegisterNativesImpl(env) &&
          ContextMenuParamsAndroid::RegisterNativesImpl(env);
 }