Split up streams logic to prepare for PlzNavigate RDH changes.

This was split out from https://codereview.chromium.org/519533002/

StreamHandle is now split into a StreamHandle and StreamInfo. StreamHandle only
manages the stream URL. StreamInfo also contains the headers and other metadata
that the streams_private mechanism uses.

StreamResourceHandler is also split out into a StreamWriter so other resource
handlers may also use it.

BUG=376015

Review URL: https://codereview.chromium.org/625993002

Cr-Commit-Position: refs/heads/master@{#299745}

1 files changed, 2 insertions, 8 deletions

diff --git a/content/browser/streams/stream.cc b/content/browser/streams/stream.cc
index d10770c..966313c 100644
--- a/content/browser/streams/stream.cc
+++ b/content/browser/streams/stream.cc
@@ -160,15 +160,9 @@ Stream::StreamState Stream::ReadRawData(net::IOBuffer* buf,
   return STREAM_HAS_DATA;
 }
 
-scoped_ptr<StreamHandle> Stream::CreateHandle(
-    const GURL& original_url,
-    const std::string& mime_type,
-    scoped_refptr<net::HttpResponseHeaders> response_headers) {
+scoped_ptr<StreamHandle> Stream::CreateHandle() {
   CHECK(!stream_handle_);
-  stream_handle_ = new StreamHandleImpl(weak_ptr_factory_.GetWeakPtr(),
-                                        original_url,
-                                        mime_type,
-                                        response_headers);
+  stream_handle_ = new StreamHandleImpl(weak_ptr_factory_.GetWeakPtr());
   return scoped_ptr<StreamHandle>(stream_handle_).Pass();
 }