Rename capture and encode threads to make it clear that they are for video.

remoting/host/chromoting_host.h

Index: remoting/host/chromoting_host.h
diff --git a/remoting/host/chromoting_host.h b/remoting/host/chromoting_host.h
index 19865c6eb0445bf0b4225fc36d7d8ab0c970913d..b86cb90e962da1fa0a47297dd4627010faeebc42 100644
--- a/remoting/host/chromoting_host.h
+++ b/remoting/host/chromoting_host.h
@@ -73,8 +73,8 @@ class ChromotingHost : public base::RefCountedThreadSafe<ChromotingHost>,
       DesktopEnvironmentFactory* desktop_environment_factory,
       scoped_ptr<protocol::SessionManager> session_manager,
       scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner,
-      scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner,
-      scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> video_capture_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> video_encode_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> network_task_runner);
 
   // Asynchronously start the host process.
@@ -185,8 +185,8 @@ class ChromotingHost : public base::RefCountedThreadSafe<ChromotingHost>,
   DesktopEnvironmentFactory* desktop_environment_factory_;
   scoped_ptr<protocol::SessionManager> session_manager_;
   scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_;
-  scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner_;
-  scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner_;
+  scoped_refptr<base::SingleThreadTaskRunner> video_capture_task_runner_;
+  scoped_refptr<base::SingleThreadTaskRunner> video_encode_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
 
   // Connection objects.