Revert 64847 - Clang fix.

TBR=evan@chromium.org
Review URL: http://codereview.chromium.org/4300003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@64850 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/extensions/convert_web_app.h

@@ -17,7 +17,7 @@ class Time;
 }
 
 namespace webkit_glue {
-struct WebApplicationInfo;
+class WebApplicationInfo;
 }
 
 // Generates a version number for an extension from a time. The goal is to make