Move logic to clear ExtensionAction values to ExtensionActionAPI

chrome/browser/extensions/api/extension_action/extension_action_api.h

Index: chrome/browser/extensions/api/extension_action/extension_action_api.h
diff --git a/chrome/browser/extensions/api/extension_action/extension_action_api.h b/chrome/browser/extensions/api/extension_action/extension_action_api.h
index dd88f6ffd9b2b4b74cc6dcef70eb2754ec7ed0c5..ac29d1f786282b2c3bf8109ee37bdda65f991500 100644
--- a/chrome/browser/extensions/api/extension_action/extension_action_api.h
+++ b/chrome/browser/extensions/api/extension_action/extension_action_api.h
@@ -90,6 +90,10 @@ class ExtensionActionAPI : public BrowserContextKeyedAPI {
                     content::WebContents* web_contents,
                     content::BrowserContext* browser_context);
 
+  // Clears the values for all ExtensionActions for the tab associated with the
+  // given |web_contents|.
+  void ClearAllValuesForTab(content::WebContents* web_contents);
+
  private:
   friend class BrowserContextKeyedAPIFactory<ExtensionActionAPI>;