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

content/browser/fileapi/chrome_blob_storage_context.h

Index: content/browser/fileapi/chrome_blob_storage_context.h
diff --git a/content/browser/fileapi/chrome_blob_storage_context.h b/content/browser/fileapi/chrome_blob_storage_context.h
index 641e235300629c6c214693f77c25801a75035b57..39cfd40a1061db4eb189602462d6c7a252695821 100644
--- a/content/browser/fileapi/chrome_blob_storage_context.h
+++ b/content/browser/fileapi/chrome_blob_storage_context.h
@@ -9,6 +9,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/fileapi/blob_context.h"
 
 namespace webkit_blob {
 class BlobStorageContext;
@@ -26,7 +27,8 @@ struct ChromeBlobStorageContextDeleter;
 // All methods, except the ctor, are expected to be called on
 // the IO thread (unless specifically called out in doc comments).
 class CONTENT_EXPORT ChromeBlobStorageContext
-    : public base::RefCountedThreadSafe<ChromeBlobStorageContext,
+    : public BlobContext,
+      public base::RefCountedThreadSafe<ChromeBlobStorageContext,
                                         ChromeBlobStorageContextDeleter> {
  public:
   ChromeBlobStorageContext();
@@ -40,6 +42,10 @@ class CONTENT_EXPORT ChromeBlobStorageContext
     return context_.get();
   }
 
+  // BlobContext implementation.
+  virtual void CreateMemoryBackedBlob(
+      const char* data, size_t length, const BlobCallback& callback) OVERRIDE;
+
  protected:
   virtual ~ChromeBlobStorageContext();
 
@@ -49,6 +55,9 @@ class CONTENT_EXPORT ChromeBlobStorageContext
                                           ChromeBlobStorageContextDeleter>;
   friend struct ChromeBlobStorageContextDeleter;
 
+  scoped_ptr<webkit_blob::BlobDataHandle> CreateMemoryBackedBlobOnIOThread(
+      const char* data, size_t length, const BlobCallback& callback);
+
   void DeleteOnCorrectThread() const;
 
   scoped_ptr<webkit_blob::BlobStorageContext> context_;