[chromedriver] Allow commands to be async.

chrome/test/chromedriver/session.h

Index: chrome/test/chromedriver/session.h
diff --git a/chrome/test/chromedriver/session.h b/chrome/test/chromedriver/session.h
index 8b2ac53e0cef51de374bb1b52c6e7fbd1007d65f..40ec9e94383ff7ba008f18c2f3ad7c556dd3a326 100644
--- a/chrome/test/chromedriver/session.h
+++ b/chrome/test/chromedriver/session.h
@@ -10,11 +10,8 @@
 
 #include "base/basictypes.h"
 #include "base/files/scoped_temp_dir.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
-#include "base/synchronization/lock.h"
-#include "base/threading/thread.h"
 #include "chrome/test/chromedriver/basic_types.h"
 #include "chrome/test/chromedriver/chrome/geoposition.h"
 
@@ -52,7 +49,7 @@ struct Session {
   std::string GetCurrentFrameId() const;
 
   const std::string id;
-  base::Thread thread;
+  bool quit;
   bool detach;
   scoped_ptr<Chrome> chrome;
   std::string window;
@@ -76,32 +73,4 @@ struct Session {
   scoped_ptr<base::DictionaryValue> CreateCapabilities();
 };
 
-class SessionAccessor : public base::RefCountedThreadSafe<SessionAccessor> {
- public:
-  virtual Session* Access(scoped_ptr<base::AutoLock>* lock) = 0;
-
-  // The session should be accessed before its deletion.
-  virtual void DeleteSession() = 0;
-
- protected:
-  friend class base::RefCountedThreadSafe<SessionAccessor>;
-  virtual ~SessionAccessor() {}
-};
-
-class SessionAccessorImpl : public SessionAccessor {
- public:
-  explicit SessionAccessorImpl(scoped_ptr<Session> session);
-
-  virtual Session* Access(scoped_ptr<base::AutoLock>* lock) OVERRIDE;
-  virtual void DeleteSession() OVERRIDE;
-
- private:
-  virtual ~SessionAccessorImpl();
-
-  base::Lock session_lock_;
-  scoped_ptr<Session> session_;
-
-  DISALLOW_COPY_AND_ASSIGN(SessionAccessorImpl);
-};
-
 #endif  // CHROME_TEST_CHROMEDRIVER_SESSION_H_