Move URL fixup to a preliminary phase that doesn't affect virtual URLs.

content/public/browser/content_browser_client.cc

Index: content/public/browser/content_browser_client.cc
diff --git a/content/public/browser/content_browser_client.cc b/content/public/browser/content_browser_client.cc
index f9177ed786bbadf9190431d6c8e4bacb13ce2ff0..06d7b9f2bd1980c7cc3ed4d25da3ad68f73d2f5c 100644
--- a/content/public/browser/content_browser_client.cc
+++ b/content/public/browser/content_browser_client.cc
@@ -278,6 +278,10 @@ bool ContentBrowserClient::IsFastShutdownPossible() {
   return true;
 }
 
+GURL ContentBrowserClient::FixupURL(const GURL& url) {
+  return url;
+}
+
 base::FilePath ContentBrowserClient::GetDefaultDownloadDirectory() {
   return base::FilePath();
 }