Add Resource Handler for creating Streams to forward to extensions

content/browser/streams/stream.h

Index: content/browser/streams/stream.h
diff --git a/content/browser/streams/stream.h b/content/browser/streams/stream.h
index 3aa389c8d96326868fcdda340d44d85db55f85cc..d6cd3b8e9430f256c938074f9fb64873f536f464 100644
--- a/content/browser/streams/stream.h
+++ b/content/browser/streams/stream.h
@@ -18,6 +18,8 @@ class IOBuffer;
 
 namespace content {
 
+class StreamHandle;
+class StreamHandleImpl;
 class StreamReadObserver;
 class StreamRegistry;
 class StreamWriteObserver;
@@ -49,6 +51,9 @@ class CONTENT_EXPORT Stream : public base::RefCountedThreadSafe<Stream> {
   // Removes the read observer.  |observer| must be the current observer.
   void RemoveReadObserver(StreamReadObserver* observer);
 
+  // Removes the write observer.  |observer| must be the current observer.
+  void RemoveWriteObserver(StreamWriteObserver* observer);
+
   // Adds the data in |buffer| to the stream.  Takes ownership of |buffer|.
   void AddData(scoped_refptr<net::IOBuffer> buffer, size_t size);
 
@@ -61,6 +66,10 @@ class CONTENT_EXPORT Stream : public base::RefCountedThreadSafe<Stream> {
   // and STREAM_COMPLETE if the stream is finalized and all data has been read.
   StreamState ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read);
 
+  scoped_ptr<StreamHandle> CreateHandle(const GURL& original_url,
+                                        const std::string& mime_type);
+  void CloseHandle();
+
   // Indicates whether there is space in the buffer to add more data.
   bool can_add_data() const { return can_add_data_; }
 
@@ -92,6 +101,8 @@ class CONTENT_EXPORT Stream : public base::RefCountedThreadSafe<Stream> {
   StreamReadObserver* read_observer_;
   StreamWriteObserver* write_observer_;
 
+  StreamHandleImpl* stream_handle_;
+
   base::WeakPtrFactory<Stream> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(Stream);
 };