Add enableReferrers and enableHyperlinkAuditing to contentSettings.misc API.

chrome/browser/download/download_manager.cc

Index: chrome/browser/download/download_manager.cc
diff --git a/chrome/browser/download/download_manager.cc b/chrome/browser/download/download_manager.cc
index c24f0964e8dcbfc67baaa3aa179b010a04004cfd..fa6f0adfafee7d1061d964c0993c28ea6144e058 100644
--- a/chrome/browser/download/download_manager.cc
+++ b/chrome/browser/download/download_manager.cc
@@ -33,6 +33,7 @@
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_paths.h"
+#include "chrome/common/pref_names.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/browser/renderer_host/render_view_host.h"
@@ -846,12 +847,19 @@ void DownloadManager::DownloadUrl(const GURL& url,
                     tab_contents);
 }
 
-void DownloadManager::DownloadUrlToFile(const GURL& url,
-                                        const GURL& referrer,
-                                        const std::string& referrer_charset,
-                                        const DownloadSaveInfo& save_info,
-                                        TabContents* tab_contents) {
+void DownloadManager::DownloadUrlToFile(
+    const GURL& url,
+    const GURL& passed_referrer,
+    const std::string& passed_referrer_charset,
+    const DownloadSaveInfo& save_info,
+    TabContents* tab_contents) {
   DCHECK(tab_contents);
+  GURL referrer;
+  std::string referrer_charset;
+  if (profile_->GetPrefs()->GetBoolean(prefs::kEnableReferrers)) {
+    referrer = passed_referrer;
+    referrer_charset = passed_referrer_charset;
+  }
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
       NewRunnableFunction(&download_util::DownloadUrl,
                           url,