Fix bug 306327: can't drag favicon for local files. Fix by Nick Kreeger, r=me.

camino/src/application/MainController.mm

@@ -294,6 +294,7 @@ const int kReuseWindowOnAE = 2;
 
   // register some special favicon images
   [[SiteIconProvider sharedFavoriteIconProvider] registerFaviconImage:[NSImage imageNamed:@"smallDocument"] forPageURI:@"about:blank"];
+  [[SiteIconProvider sharedFavoriteIconProvider] registerFaviconImage:[NSImage imageNamed:@"smallDocument"] forPageURI:@"about:local_file"];
   [[SiteIconProvider sharedFavoriteIconProvider] registerFaviconImage:[NSImage imageNamed:@"bm_favicon"]    forPageURI:@"about:bookmarks"];
   [[SiteIconProvider sharedFavoriteIconProvider] registerFaviconImage:[NSImage imageNamed:@"historyicon"]   forPageURI:@"about:history"];
 

camino/src/browser/SiteIconProvider.mm

@@ -577,7 +577,7 @@ MakeFaviconURIFromURI(const nsAString& inURIString, nsAString& outFaviconURI)
   // show small file icon for local files (this assumes that someone has
   // registered the blank document icon for "about:blank")
   if ([inURI compare:@"file://" options:NSCaseInsensitiveSearch range:NSMakeRange(0, 7)] == NSOrderedSame)
-    return @"about:blank";
+    return @"about:local_file";
 
   nsAutoString uriString;
   [inURI assignTo_nsAString:uriString];