Implement native bindings for cast extensions API

chrome/renderer/extensions/webrtc_native_handler.h

Index: chrome/renderer/extensions/webrtc_native_handler.h
diff --git a/chrome/renderer/extensions/webrtc_native_handler.h b/chrome/renderer/extensions/webrtc_native_handler.h
index fb3ecdcccf9d449b31e6d8b8deb79180aafbac4d..d2de0ddebd350f9a43c6fb91bfff41145984b897 100644
--- a/chrome/renderer/extensions/webrtc_native_handler.h
+++ b/chrome/renderer/extensions/webrtc_native_handler.h
@@ -5,9 +5,15 @@
 #ifndef CHROME_RENDERER_EXTENSIONS_WEBRTC_NATIVE_HANDLER_H_
 #define CHROME_RENDERER_EXTENSIONS_WEBRTC_NATIVE_HANDLER_H_
 
+#include <map>
+
+#include "base/memory/linked_ptr.h"
 #include "chrome/renderer/extensions/object_backed_native_handler.h"
 #include "v8/include/v8.h"
 
+class CastSendTransport;
+class CastUdpTransport;
+
 namespace extensions {
 
 class ChromeV8Context;
@@ -41,6 +47,17 @@ class WebRtcNativeHandler : public ObjectBackedNativeHandler {
   void StopCastUdpTransport(
       const v8::FunctionCallbackInfo<v8::Value>& args);
 
+  // Helper methods to get transport indexed by |transport_id|.
+  // If the transport is not found then return NULL.

[not at google - send to devlin, 2013/10/30 20:41:57]

Comment: Gets the Send or UDP transport indexed by |transport_id|.
If not found, returns NULL.

[Alpha Left Google, 2013/10/30 23:58:26]

Done.

+  CastSendTransport* GetSendTransport(int transport_id) const;
+  CastUdpTransport* GetUdpTransport(int transport_id) const;
+
+  int last_transport_id_;
+  typedef std::map<int, linked_ptr<CastSendTransport> > SendTransportMap;
+  SendTransportMap send_transport_map_;
+  typedef std::map<int, linked_ptr<CastUdpTransport> > UdpTransportMap;
+  UdpTransportMap udp_transport_map_;

[not at google - send to devlin, 2013/10/30 20:41:57]

can you separate these with new lines? it's hard to read. like

int last_transport_id_;

typedef...
SendTransportMap...

typedef...
UdpTransportMap

[Alpha Left Google, 2013/10/30 23:58:26]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(WebRtcNativeHandler);
 };