Implement the target locator commands for ChromeDriver.

chrome/test/automation/tab_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/tab_proxy.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/string16.h"
 #include "base/threading/platform_thread.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/common/automation_messages.h"
 #include "chrome/common/json_value_serializer.h"
 #include "chrome/test/automation/automation_proxy.h"
+#include "chrome/test/automation/browser_proxy.h"
 #include "googleurl/src/gurl.h"
 
 TabProxy::TabProxy(AutomationMessageSender* sender,
                    AutomationHandleTracker* tracker,
                    int handle)
     : AutomationResourceProxy(tracker, sender, handle) {
 }
 
+scoped_refptr<BrowserProxy> TabProxy::GetParentBrowser() const {
+  if (!is_valid())
+    return NULL;
+
+  int browser_handle = 0;
+  sender_->Send(
+      new AutomationMsg_GetParentBrowserOfTab(handle_, &browser_handle));
+  if (!browser_handle)
+    return NULL;
+
+  BrowserProxy* browser = static_cast<BrowserProxy*>(
+      tracker_->GetResource(browser_handle));
+  if (!browser) {
+    browser = new BrowserProxy(sender_, tracker_, browser_handle);
+    browser->AddRef();
+  }
+
+  // Since there is no scoped_refptr::attach.
+  scoped_refptr<BrowserProxy> result;
+  result.swap(&browser);
+  return result;
+}
 
 bool TabProxy::GetTabTitle(std::wstring* title) const {
   if (!is_valid())
     return false;
 
   if (!title) {
     NOTREACHED();
     return false;
   }
 
@@ skipping 795 matching lines @@
                                                       json));
 }
 
 void TabProxy::FirstObjectAdded() {
   AddRef();
 }
 
 void TabProxy::LastObjectRemoved() {
   Release();
 }