Plugins: Remove left over references to chrome://plugins

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 56d4f49964a30b3bc6afd176fcfbd73496972f05..9ea164f3620afccf396246f4ddae3adfdab7dd33 100644
--- a/chrome/common/url_constants.h
+++ b/chrome/common/url_constants.h
@@ -67,7 +67,6 @@ extern const char kChromeUINewTabURL[];
 extern const char kChromeUINTPTilesInternalsURL[];
 extern const char kChromeUIOmniboxURL[];
 extern const char kChromeUIPasswordManagerInternalsHost[];
-extern const char kChromeUIPluginsURL[];
 extern const char kChromeUIPolicyURL[];
 extern const char kChromeUIMdUserManagerUrl[];
 extern const char kChromeUIPrintURL[];
@@ -211,7 +210,6 @@ extern const char kChromeUINTPTilesInternalsHost[];
 extern const char kChromeUIOfflineInternalsHost[];
 extern const char kChromeUIOmniboxHost[];
 extern const char kChromeUIPhysicalWebHost[];
-extern const char kChromeUIPluginsHost[];
 extern const char kChromeUIComponentsHost[];
 extern const char kChromeUIPolicyHost[];
 extern const char kChromeUIMdUserManagerHost[];