Refactor: Make PyAuto InstallExtension() take a string. Delete dead code.

chrome/test/automation/automation_proxy.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/test/automation/automation_proxy.h"
 
 #include <gtest/gtest.h>
 
 #include <sstream>
 
@@ skipping 217 matching lines @@
 void AutomationProxy::SignalNewTabUITab(int load_time) {
   new_tab_ui_load_time_ = load_time;
   new_tab_ui_load_complete_.Signal();
 }
 
 bool AutomationProxy::SavePackageShouldPromptUser(bool should_prompt) {
   return Send(new AutomationMsg_SavePackageShouldPromptUser(should_prompt));
 }
 
 scoped_refptr<ExtensionProxy> AutomationProxy::InstallExtension(
-    const FilePath& crx_file, bool with_ui) {
+    const std::string& extension_path, bool with_ui) {
   int handle = 0;
-  if (!Send(new AutomationMsg_InstallExtensionAndGetHandle(crx_file, with_ui,
-                                                           &handle)))
+  if (!Send(new AutomationMsg_InstallExtension(extension_path,
+                                               with_ui, &handle)))
     return NULL;
 
   return ProxyObjectFromHandle<ExtensionProxy>(handle);
 }
 
 void AutomationProxy::EnsureExtensionTestResult() {
   bool result;
   std::string message;
   if (!Send(new AutomationMsg_WaitForExtensionTestResult(&result,
                                                          &message))) {
@@ skipping 301 matching lines @@
 }
 
 bool AutomationProxy::SendJSONRequest(const std::string& request,
                                       int timeout_ms,
                                       std::string* response) {
   bool result = false;
   if (!SendAutomationJSONRequest(this, request, timeout_ms, response, &result))
     return false;
   return result;
 }