Offline Pages - Removes the "ClearAllPages" API.

components/offline_pages/offline_page_model.h

Index: components/offline_pages/offline_page_model.h
diff --git a/components/offline_pages/offline_page_model.h b/components/offline_pages/offline_page_model.h
index 7a4423f88b3bfe91a6fdd9376ae8b8e039bc17c7..0626ec1dcd139ba99494fe2cd67b6c44f8677314 100644
--- a/components/offline_pages/offline_page_model.h
+++ b/components/offline_pages/offline_page_model.h
@@ -96,9 +96,6 @@ class OfflinePageModel : public base::SupportsUserData {
   // will be updated. Requires that the model is loaded.
   virtual void MarkPageAccessed(int64_t offline_id) = 0;
 
-  // Wipes out all the data by deleting all saved files and clearing the store.
-  virtual void ClearAll(const base::Closure& callback) = 0;
-
   // Deletes pages based on |offline_ids|.
   virtual void DeletePagesByOfflineId(const std::vector<int64_t>& offline_ids,
                                       const DeletePageCallback& callback) = 0;