Add referrer & load flag support to BitmapFetcher class.

chrome/browser/bitmap_fetcher.cc

 // Copyright 2014 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/bitmap_fetcher.h"
 
 #include "content/public/browser/browser_thread.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_status.h"
 
 namespace chrome {
 
 BitmapFetcher::BitmapFetcher(const GURL& url,
                              BitmapFetcherDelegate* delegate)
     : url_(url),
       delegate_(delegate) {
 }
 
 BitmapFetcher::~BitmapFetcher() {}
 
 void BitmapFetcher::Start(net::URLRequestContextGetter* request_context) {
-  if (url_fetcher_ != NULL)
-    return;
+  Fetch(request_context, NULL, NULL, NULL);
+}
 
-  url_fetcher_.reset(net::URLFetcher::Create(url_, net::URLFetcher::GET, this));
-  url_fetcher_->SetRequestContext(request_context);
-  url_fetcher_->Start();
+void BitmapFetcher::Start(net::URLRequestContextGetter* request_context,
+                          const std::string& referrer,
+                          net::URLRequest::ReferrerPolicy referrer_policy,
+                          int load_flags) {
+  Fetch(request_context, &referrer, &referrer_policy, &load_flags);
 }
 
 // Methods inherited from URLFetcherDelegate.
 
 void BitmapFetcher::OnURLFetchComplete(const net::URLFetcher* source) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 
   if (source->GetStatus().status() != net::URLRequestStatus::SUCCESS) {
     ReportFailure();
     return;
@@ skipping 27 matching lines @@
   decoded_image.deepCopyTo(bitmap.get());
 
   // Report success.
   delegate_->OnFetchComplete(url_, bitmap.get());
 }
 
 void BitmapFetcher::OnDecodeImageFailed(const ImageDecoder* decoder) {
   ReportFailure();
 }
 
+void BitmapFetcher::Fetch(
+    net::URLRequestContextGetter* request_context,
+    const std::string* referrer,
+    const net::URLRequest::ReferrerPolicy* referrer_policy,
+    const int* load_flags) {
+  if (url_fetcher_ != NULL)
+    return;
+
+  url_fetcher_.reset(net::URLFetcher::Create(url_, net::URLFetcher::GET, this));
+  url_fetcher_->SetRequestContext(request_context);
+  if (referrer)
+    url_fetcher_->SetReferrer(*referrer);
+  if (referrer_policy)
+    url_fetcher_->SetReferrerPolicy(*referrer_policy);
+  if (load_flags)
+    url_fetcher_->SetLoadFlags(*load_flags);
+
+  url_fetcher_->Start();
+}
+
 void BitmapFetcher::ReportFailure() {
   delegate_->OnFetchComplete(url_, NULL);
 }
 
 }  // namespace chrome