Add referrer & load flag support to BitmapFetcher class.

chrome/browser/bitmap_fetcher.cc

Index: chrome/browser/bitmap_fetcher.cc
diff --git a/chrome/browser/bitmap_fetcher.cc b/chrome/browser/bitmap_fetcher.cc
index c31b62aca2268e4b4f6b1cb212937588a2c6b5cb..f80f90cbdd0fd80fe4e07e847b51b1ed779d5b97 100644
--- a/chrome/browser/bitmap_fetcher.cc
+++ b/chrome/browser/bitmap_fetcher.cc
@@ -20,12 +20,14 @@ BitmapFetcher::BitmapFetcher(const GURL& url,
 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.
@@ -73,6 +75,26 @@ 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);
 }