Remove last extension dependencies from content.

content/browser/content_browser_client.cc

Index: content/browser/content_browser_client.cc
diff --git a/content/browser/content_browser_client.cc b/content/browser/content_browser_client.cc
index 86b6d5330802aafc13bcb7aa7d6bac9d79db43f1..e2d92f53480ebef07c4084d1bd595e7c1427e1c7 100644
--- a/content/browser/content_browser_client.cc
+++ b/content/browser/content_browser_client.cc
@@ -137,6 +137,16 @@ void ContentBrowserClient::CancelDesktopNotification(
     int notification_id) {
 }
 
+bool ContentBrowserClient::CheckBackgroundPermission(
+    const GURL& source_url, const content::ResourceContext& context) {
+  return false;
+}
+
+std::string ContentBrowserClient::GetWorkerProcessTitle(
+    const GURL& url, const content::ResourceContext& context) {
+  return std::string();
+}
+
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 int ContentBrowserClient::GetCrashSignalFD(const std::string& process_type) {
   return -1;