Optimized webstorage performance

content/browser/dom_storage/dom_storage_message_filter.h

Index: content/browser/dom_storage/dom_storage_message_filter.h
diff --git a/content/browser/dom_storage/dom_storage_message_filter.h b/content/browser/dom_storage/dom_storage_message_filter.h
index aecfda575550e49ee81e9528213b0360fec9fee6..ed13e1c1e51dbf74290c5c0b65bd5ef51c47d3c6 100644
--- a/content/browser/dom_storage/dom_storage_message_filter.h
+++ b/content/browser/dom_storage/dom_storage_message_filter.h
@@ -8,6 +8,7 @@
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/shared_memory.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebStorageArea.h"
 #include "webkit/dom_storage/dom_storage_context.h"
@@ -52,12 +53,23 @@ class DOMStorageMessageFilter
   void OnLoadStorageArea(int connection_id, dom_storage::ValuesMap* map);
   void OnLength(int connection_id, unsigned* length);
   void OnKey(int connection_id, unsigned index, NullableString16* key);
-  void OnGetItem(int connection_id, const string16& key,
-                 NullableString16* value);
+  void OnGetItem(int connection_id,
+      const string16& key,
+      int* ipc_flag,
+      base::SharedMemoryHandle* browser_handle,
+      unsigned* shm_size,
+      NullableString16* value);
   void OnSetItem(int connection_id, const string16& key,
-                 const string16& value, const GURL& page_url,
-                 WebKit::WebStorageArea::Result* result,
-                 NullableString16* old_value);
+      const string16& value, const GURL& page_url,
+      WebKit::WebStorageArea::Result* result,
+      NullableString16* old_value);
+  void OnSetItemOpt(
+      int connection_id, const string16& key,
+      const int value_len,
+      base::SharedMemoryHandle renderer_handle,
+      const GURL& page_url,
+      WebKit::WebStorageArea::Result* result,
+      NullableString16* old_value);
   void OnSetItemAsync(int connection_id, int operation_id, const string16& key,
                       const string16& value, const GURL& page_url);