Add a mimeHandler extension API.

extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h

Index: extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
diff --git a/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h b/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
index a1a5c2136d31f0f6e5c6d3a639ed0bf478d2e460..cba159e54ecf7902be5676016e7ba6b1b01bc7ea 100644
--- a/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
+++ b/extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h
@@ -23,6 +23,9 @@ class MimeHandlerViewGuestDelegate;
 class StreamContainer {
  public:
   StreamContainer(scoped_ptr<content::StreamInfo> stream,
+                  int tab_id,
+                  int64_t expected_content_size,

[raymes, 2015/01/12 05:26:04]

I'm tempted to remove content size because I don't think it's used by anyone.
WDYT? We could add it again later.

[Sam McNally, 2015/01/12 07:13:35]

Done.

+                  bool embedded,
                   const GURL& handler_url,
                   const std::string& extension_id);
   ~StreamContainer();
@@ -33,11 +36,17 @@ class StreamContainer {
   base::WeakPtr<StreamContainer> GetWeakPtr();
 
   const content::StreamInfo* stream_info() { return stream_.get(); }
+  bool embedded() { return embedded_; }
+  int64_t expected_content_size() { return expected_content_size_; }
+  int tab_id() { return tab_id_; }
   GURL handler_url() { return handler_url_; }
   std::string extension_id() { return extension_id_; }
 
  private:
   const scoped_ptr<content::StreamInfo> stream_;
+  const bool embedded_;
+  const int64_t expected_content_size_;
+  const int tab_id_;
   const GURL handler_url_;
   const std::string extension_id_;