Added the chrome://safe-browsing/ page as part of the chrome://about

chrome/common/url_constants.h

Index: chrome/common/url_constants.h
diff --git a/chrome/common/url_constants.h b/chrome/common/url_constants.h
index c6221cf34fb0bf4c64d83a0e3a76acc9c6e1b87c..e3e9c4bd1ab40f59f6c0cadab621a7c92f6301a6 100644
--- a/chrome/common/url_constants.h
+++ b/chrome/common/url_constants.h
@@ -73,6 +73,7 @@ extern const char kChromeUIMdUserManagerUrl[];
 extern const char kChromeUIPrintURL[];
 extern const char kChromeUIQuitURL[];
 extern const char kChromeUIRestartURL[];
+extern const char kChromeUISafeBrowsingURL[];
 extern const char kChromeUIMdSettingsURL[];
 extern const char kChromeUISettingsURL[];
 extern const char kChromeUIContentSettingsURL[];
@@ -223,6 +224,7 @@ extern const char kChromeUIProfilerHost[];
 extern const char kChromeUIQuotaInternalsHost[];
 extern const char kChromeUIQuitHost[];
 extern const char kChromeUIRestartHost[];
+extern const char kChromeUISafeBrowsingHost[];
 extern const char kChromeUISettingsHost[];
 extern const char kChromeUISettingsFrameHost[];
 extern const char kChromeUIShorthangHost[];