Move elide_url to its own component

ui/secure_display/elide_url.h

Index: ui/secure_display/elide_url.h
diff --git a/chrome/browser/ui/elide_url.h b/ui/secure_display/elide_url.h
similarity index 94%
rename from chrome/browser/ui/elide_url.h
rename to ui/secure_display/elide_url.h
index b68267cb6d23568496f79644ed2e1aed49d80723..44aafa56c3deea4e4e2e941d07b7d57a01758feb 100644
--- a/chrome/browser/ui/elide_url.h
+++ b/ui/secure_display/elide_url.h
@@ -4,8 +4,8 @@
 //
 // This file defines utility functions for eliding URLs.
 
-#ifndef CHROME_BROWSER_UI_ELIDE_URL_H_
-#define CHROME_BROWSER_UI_ELIDE_URL_H_
+#ifndef UI_SECURE_DISPLAY_ELIDE_URL_H_
+#define UI_SECURE_DISPLAY_ELIDE_URL_H_
 
 #include <string>
 
@@ -17,6 +17,7 @@ namespace gfx {
 class FontList;
 }
 
+namespace secure_display {
 // This function takes a GURL object and elides it. It returns a string
 // which composed of parts from subdomain, domain, path, filename and query.
 // A "..." is added automatically at the end if the elided string is bigger
@@ -61,4 +62,6 @@ base::string16 ElideHost(const GURL& host_url,
 base::string16 FormatUrlForSecurityDisplay(const GURL& origin,
                                            const std::string& languages);
 
-#endif  // CHROME_BROWSER_UI_ELIDE_URL_H_
+}  // namespace
+
+#endif  // UI_SECURE_DISPLAY_ELIDE_URL_H_