[Storage] Consoliation of BlobItems with small size

content/child/webblobregistry_impl.h

Index: content/child/webblobregistry_impl.h
diff --git a/content/child/webblobregistry_impl.h b/content/child/webblobregistry_impl.h
index e438baa2bdf96256a8f96e990d0207402d1ec33a..be85d7988997413b4fc0e056e51bd23f9ef334d8 100644
--- a/content/child/webblobregistry_impl.h
+++ b/content/child/webblobregistry_impl.h
@@ -6,6 +6,7 @@
 #define CONTENT_CHILD_WEBBLOBREGISTRY_IMPL_H_
 
 #include <string>
+#include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "third_party/WebKit/public/platform/WebBlobRegistry.h"
@@ -43,8 +44,19 @@ class WebBlobRegistryImpl : public blink::WebBlobRegistry {
   virtual void unregisterStreamURL(const blink::WebURL& url);
 
  private:
-  void SendDataForBlob(const std::string& uuid_str,
-                       const blink::WebThreadSafeData& data);
+  // Sends the data in the buffer as a blob item, then resets the buffer size.
+  void SendAndClearConsolidatingBuffer(
+      const std::string& uuid_str,
+      std::vector<char>* consolidating_buffer,
+      size_t* consolidating_items_size_bytes) const;
+  // Adds the item to the consolidating buffer.  We assume that the buffer can
+  // hold the new item, caller should check this beforehand.
+  void AddItemToBuffer(const blink::WebThreadSafeData& data,
+                       std::vector<char>* consolidating_buffer,
+                       size_t* consolidating_items_size_bytes) const;
+  // Sends data that is larger than the threshold.
+  void SendOversizedDataForBlob(const std::string& uuid_str,
+                                const blink::WebThreadSafeData& data);
 
   scoped_refptr<ThreadSafeSender> sender_;
 };