Blobs: Mechanism for creating Blobs in browser process, then transferring to renderer.

content/public/browser/browser_context.h

Index: content/public/browser/browser_context.h
diff --git a/content/public/browser/browser_context.h b/content/public/browser/browser_context.h
index 0a022e4066e8162fe546133dfb22acf869ed1398..f20b40f38308f2a2ad0add8a5addf6812e6ea85a 100644
--- a/content/public/browser/browser_context.h
+++ b/content/public/browser/browser_context.h
@@ -31,6 +31,7 @@ class SpecialStoragePolicy;
 
 namespace content {
 
+class BlobHandle;
 class BrowserPluginGuestManager;
 class DownloadManager;
 class DownloadManagerDelegate;
@@ -77,6 +78,13 @@ class CONTENT_EXPORT BrowserContext : public base::SupportsUserData {
   static content::StoragePartition* GetDefaultStoragePartition(
       BrowserContext* browser_context);
 
+  typedef base::Callback<void(scoped_ptr<BlobHandle>)> BlobCallback;
+
+  // |callback| returns a NULL scoped_ptr on failure.
+  static void CreateMemoryBackedBlob(BrowserContext* browser_context,
+                                     const char* data, size_t length,
+                                     const BlobCallback& callback);
+
   // Ensures that the corresponding ResourceContext is initialized. Normally the
   // BrowserContext initializs the corresponding getters when its objects are
   // created, but if the embedder wants to pass the ResourceContext to another