Revise about: and chrome: url handling.

chrome/browser/net/url_fixer_upper.h

Index: chrome/browser/net/url_fixer_upper.h
diff --git a/chrome/browser/net/url_fixer_upper.h b/chrome/browser/net/url_fixer_upper.h
index e6096bb4cf9569445e3e20060b5df92a83e7e2e5..a0970fb47f205a50c05e6f1034630e4ead661597 100644
--- a/chrome/browser/net/url_fixer_upper.h
+++ b/chrome/browser/net/url_fixer_upper.h
@@ -49,6 +49,11 @@ namespace URLFixerUpper {
   // instead of ".com").
   GURL FixupURL(const std::string& text, const std::string& desired_tld);
 
+  // Normalizes about:foo, about://foo, and chrome:foo to chrome://foo.
+  // The host "version" is added if the url does not contain a host ("about:");
+  // otherwise GURL considers the result invalid.
+  GURL FixupChromeURL(const GURL& url);

[abarth-chromium, 2011/05/31 19:27:54]

This description doesn't seem quite right.  This function always returns a
"chrome" URL, right?

[msw, 2011/05/31 20:58:25]

Done.

+
   // Converts |text| to a fixed-up URL, allowing it to be a relative path on
   // the local filesystem.  Begin searching in |base_dir|; if empty, use the
   // current working directory.  If this resolves to a file on disk, convert it