extension_web_contents_observer.h    9 apps/shell/browser/shell_extension_web_contents_observer.h #include "extensions/browser/extension_web_contents_observer.h"
extension_web_contents_observer.h   11 chrome/browser/extensions/chrome_extension_web_contents_observer.h #include "extensions/browser/extension_web_contents_observer.h"
extension_web_contents_observer.h    5 extensions/browser/extension_web_contents_observer.cc #include "extensions/browser/extension_web_contents_observer.h"