Add Stream support to WebBlobRegistry and FileAPIMessageFilter.

content/browser/fileapi/fileapi_message_filter.h

Index: content/browser/fileapi/fileapi_message_filter.h
diff --git a/content/browser/fileapi/fileapi_message_filter.h b/content/browser/fileapi/fileapi_message_filter.h
index 8c09c596055aaf4daf8914b4b605fa7852fe6083..96c504603099f57b9f7b6cd6432494dab8db9448 100644
--- a/content/browser/fileapi/fileapi_message_filter.h
+++ b/content/browser/fileapi/fileapi_message_filter.h
@@ -13,8 +13,11 @@
 #include "base/containers/hash_tables.h"
 #include "base/files/file_util_proxy.h"
 #include "base/id_map.h"
+#include "base/memory/ref_counted.h"
 #include "base/platform_file.h"
 #include "base/shared_memory.h"
+#include "content/browser/streams/stream.h"
+#include "content/browser/streams/stream_context.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "webkit/browser/fileapi/file_system_operation_runner.h"
@@ -54,13 +57,15 @@ class CONTENT_EXPORT FileAPIMessageFilter : public BrowserMessageFilter {
       int process_id,
       net::URLRequestContextGetter* request_context_getter,
       fileapi::FileSystemContext* file_system_context,
-      ChromeBlobStorageContext* blob_storage_context);
+      ChromeBlobStorageContext* blob_storage_context,
+      StreamContext* stream_context);
   // Used by the worker process host on the IO thread.
   FileAPIMessageFilter(
       int process_id,
       net::URLRequestContext* request_context,
       fileapi::FileSystemContext* file_system_context,
-      ChromeBlobStorageContext* blob_storage_context);
+      ChromeBlobStorageContext* blob_storage_context,
+      StreamContext* stream_context);
 
   // BrowserMessageFilter implementation.
   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
@@ -122,6 +127,7 @@ class CONTENT_EXPORT FileAPIMessageFilter : public BrowserMessageFilter {
   void OnDidReceiveSnapshotFile(int request_id);
 
   void OnStartBuildingBlob(const GURL& url);
+  void OnStartBuildingStream(const GURL& url, const std::string& content_type);
   void OnAppendBlobDataItem(const GURL& url,
                             const webkit_blob::BlobData::Item& item);
   void OnAppendSharedMemory(const GURL& url, base::SharedMemoryHandle handle,
@@ -169,6 +175,8 @@ class CONTENT_EXPORT FileAPIMessageFilter : public BrowserMessageFilter {
                              int permissions,
                              base::PlatformFileError* error);
 
+  scoped_refptr<Stream> GetStreamForURL(const GURL& url);
+
   fileapi::FileSystemOperationRunner* operation_runner();
 
   int process_id_;
@@ -186,6 +194,7 @@ class CONTENT_EXPORT FileAPIMessageFilter : public BrowserMessageFilter {
   net::URLRequestContext* request_context_;
 
   scoped_refptr<ChromeBlobStorageContext> blob_storage_context_;
+  scoped_refptr<StreamContext> stream_context_;
 
   // Keep track of blob URLs registered in this process. Need to unregister
   // all of them when the renderer process dies.