Make the page action space show extensions with active content scripts or

chrome/common/extensions/extension.h

Index: chrome/common/extensions/extension.h
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index 6fd87bf159b4b6d141e419403b02925249b0ada0..5e7df6f22ccd5af20b092ece7928e26092a18cf2 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -534,6 +534,9 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
   // settings page (i.e. chrome://extensions).
   bool ShouldDisplayInExtensionSettings() const;
 
+  // Returns true if the extension has a content script declared at |url|.
+  bool HasContentScriptAtURL(const GURL& url) const;
+
   // Accessors:
 
   const FilePath& path() const { return path_; }