Add referrer & load flag support to BitmapFetcher class.

content/public/common/referrer.h

Index: content/public/common/referrer.h
diff --git a/content/public/common/referrer.h b/content/public/common/referrer.h
index b10bfd6c28e6cd96f6e44a5a2070904693fae979..3c5bfe46208677b8bf8d893373ae4c7342d55a4e 100644
--- a/content/public/common/referrer.h
+++ b/content/public/common/referrer.h
@@ -14,13 +14,17 @@ namespace content {
 // This struct holds a referrer URL, as well as the referrer policy to be
 // applied to this URL. When passing around referrers that will eventually end
 // up being used for URL requests, always use this struct.
-struct CONTENT_EXPORT Referrer {
+class CONTENT_EXPORT Referrer {
+ public:
   Referrer(const GURL& url, blink::WebReferrerPolicy policy) : url(url),
-                                                                policy(policy) {
+                                                               policy(policy) {
   }
   Referrer() : policy(blink::WebReferrerPolicyDefault) {
   }
 
+  GURL ReferrerHeaderUrlForNavigation(const GURL& destination) const;
+
+  // TODO(kkimlabs): Make private, make getter & setter, and rename, e.g., url_.

[Kibeom Kim (inactive), 2014/04/30 00:58:56]

I'll do this for the next patchset if making Referrer struct -> class is ok.

   GURL url;
   blink::WebReferrerPolicy policy;
 };