localStorage: Aggressively flush to disk for Android WebView.

content/browser/dom_storage/dom_storage_area.h

Index: content/browser/dom_storage/dom_storage_area.h
diff --git a/content/browser/dom_storage/dom_storage_area.h b/content/browser/dom_storage/dom_storage_area.h
index 3a4b1660598ccb4a08e189daaaac6af6c81c58b9..dd0df52bdc218ad594be92e41aca00e7fcecc79c 100644
--- a/content/browser/dom_storage/dom_storage_area.h
+++ b/content/browser/dom_storage/dom_storage_area.h
@@ -35,6 +35,12 @@ class CONTENT_EXPORT DOMStorageArea
   static base::FilePath DatabaseFileNameFromOrigin(const GURL& origin);
   static GURL OriginFromDatabaseFileName(const base::FilePath& file_name);
 
+  // Commence aggressive flushing. This should be called early in the startup -
+  // before any localStorage writing. Currently scheduled writes will not be
+  // rescheduled and will be flushed at the scheduled time after which
+  // aggressive flushing will commence.
+  static void EnableAggressiveCommitDelay();
+
   // Local storage. Backed on disk if directory is nonempty.
   DOMStorageArea(const GURL& origin,
                  const base::FilePath& directory,
@@ -153,6 +159,8 @@ class CONTENT_EXPORT DOMStorageArea
 
   void ShutdownInCommitSequence();
 
+  static bool s_aggressive_flushing_enabled_;
+
   int64 namespace_id_;
   std::string persistent_namespace_id_;
   GURL origin_;