Split up streams logic to prepare for PlzNavigate RDH changes.

chrome/browser/extensions/api/streams_private/streams_private_api.h

Index: chrome/browser/extensions/api/streams_private/streams_private_api.h
diff --git a/chrome/browser/extensions/api/streams_private/streams_private_api.h b/chrome/browser/extensions/api/streams_private/streams_private_api.h
index c0494c9acf63d34a7e3ec27e3ba97e58d8325c72..9914b23982ad8039e997505828f6b0684503b15d 100644
--- a/chrome/browser/extensions/api/streams_private/streams_private_api.h
+++ b/chrome/browser/extensions/api/streams_private/streams_private_api.h
@@ -16,6 +16,7 @@
 namespace content {
 class BrowserContext;
 class StreamHandle;
+struct StreamInfo;
 }
 
 namespace extensions {
@@ -37,7 +38,7 @@ class StreamsPrivateAPI : public BrowserContextKeyedAPI,
   // in a BrowserPlugin, specify a non-empty |view_id| of the plugin.
   void ExecuteMimeTypeHandler(const std::string& extension_id,
                               content::WebContents* web_contents,
-                              scoped_ptr<content::StreamHandle> stream,
+                              scoped_ptr<content::StreamInfo> stream,
                               const std::string& view_id,
                               int64 expected_content_size);