First pass at refactoring pyautolib in preparation for removing proxy dependencies.

chrome/test/pyautolib/pyautolib.h

Index: chrome/test/pyautolib/pyautolib.h
diff --git a/chrome/test/pyautolib/pyautolib.h b/chrome/test/pyautolib/pyautolib.h
index 8e47776a19263a7b33faba67439168c4119c4307..5cf48af75125da9e07445f5fcc7ce1920ff0a62c 100644
--- a/chrome/test/pyautolib/pyautolib.h
+++ b/chrome/test/pyautolib/pyautolib.h
@@ -12,6 +12,7 @@
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "base/test/test_timeouts.h"
+#include "base/time.h"
 #include "chrome/test/ui/ui_test.h"
 #include "chrome/test/ui/ui_test_suite.h"
 
@@ -211,6 +212,16 @@ class PyUITestBase : public UITestBase {
   virtual void SetLaunchSwitches() OVERRIDE;
 
  private:
+  // Create JSON error responses.
+  void ErrorResponse(const std::string& error_string,
+                     const std::string& request,
+                     std::string* response);
+  void RequestFailureResponse(
+      const std::string& request,
+      const base::TimeDelta& duration,
+      const base::TimeDelta& timeout,
+      std::string* response);
+
   // Gets the current state of the bookmark bar. Returns false if it failed.
   bool GetBookmarkBarState(bool* visible, bool* detached, int window_index = 0);