Add method to delete storage for origins to LocalStorageContextMojo.

content/browser/dom_storage/local_storage_context_mojo.h

Index: content/browser/dom_storage/local_storage_context_mojo.h
diff --git a/content/browser/dom_storage/local_storage_context_mojo.h b/content/browser/dom_storage/local_storage_context_mojo.h
index 9f648d19f3e826cf3c7507d430abbfe6f32508ab..c6fea56a4b85a123fca2005affad8a2e6b47b0f5 100644
--- a/content/browser/dom_storage/local_storage_context_mojo.h
+++ b/content/browser/dom_storage/local_storage_context_mojo.h
@@ -37,6 +37,9 @@ class CONTENT_EXPORT LocalStorageContextMojo {
   void OpenLocalStorage(const url::Origin& origin,
                         mojom::LevelDBWrapperRequest request);
   void GetStorageUsage(GetStorageUsageCallback callback);
+  void DeleteStorage(const url::Origin& origin);
+  // Like DeleteStorage(), but also deletes storage for all sub-origins.
+  void DeleteStorageForPhysicalOrigin(const url::Origin& origin);
 
   void SetDatabaseForTesting(leveldb::mojom::LevelDBDatabasePtr database);
 
@@ -63,6 +66,7 @@ class CONTENT_EXPORT LocalStorageContextMojo {
   // directly from that function, or through |on_database_open_callbacks_|.
   void BindLocalStorage(const url::Origin& origin,
                         mojom::LevelDBWrapperRequest request);
+  LevelDBWrapperImpl* GetOrCreateDBWrapper(const url::Origin& origin);
 
   // The (possibly delayed) implementation of GetStorageUsage(). Can be called
   // directly from that function, or through |on_database_open_callbacks_|.
@@ -71,6 +75,10 @@ class CONTENT_EXPORT LocalStorageContextMojo {
                      leveldb::mojom::DatabaseError status,
                      std::vector<leveldb::mojom::KeyValuePtr> data);
 
+  void OnGotStorageUsageForDeletePhysicalOrigin(
+      const url::Origin& origin,
+      std::vector<LocalStorageUsageInfo> usage);
+
   service_manager::Connector* const connector_;
   const base::FilePath subdirectory_;