Refactor ExtensionTabUtil-namespaced functions into their own file.

chrome/browser/extensions/extension_tab_util.h

Index: chrome/browser/extensions/extension_tab_util.h
diff --git a/chrome/browser/extensions/extension_tab_util.h b/chrome/browser/extensions/extension_tab_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..5dfb36f97d280909a67d607eac5a0287f3f781e5
--- /dev/null
+++ b/chrome/browser/extensions/extension_tab_util.h
@@ -0,0 +1,60 @@
+// 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_UTIL_H__
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_UTIL_H__
+#pragma once
+
+#include <string>
+
+class Browser;
+class Profile;
+class TabContents;
+class TabContentsWrapper;
+class TabStripModel;
+
+namespace base {
+class DictionaryValue;
+class ListValue;
+}
+
+// Provides various utility functions that help manipulate tabs.
+class ExtensionTabUtil {
+ public:
+  static int GetWindowId(const Browser* browser);
+  static int GetTabId(const TabContents* tab_contents);
+  static bool GetTabIdFromArgument(const base::ListValue &args,
+                                   int argument_index,
+                                   int *tab_id, std::string* error_message);
+  static std::string GetTabStatusText(bool is_loading);
+  static int GetWindowIdOfTab(const TabContents* tab_contents);
+  static base::ListValue* CreateTabList(const Browser* browser);
+  static base::DictionaryValue* CreateTabValue(
+      const TabContents* tab_contents);
+  static base::DictionaryValue* CreateTabValue(const TabContents* tab_contents,
+                                               TabStripModel* tab_strip,
+                                               int tab_index);
+  // Create a tab value, overriding its kSelectedKey to the provided boolean.
+  static base::DictionaryValue* CreateTabValueActive(
+      const TabContents* tab_contents,
+      bool active);
+  static base::DictionaryValue* CreateWindowValue(const Browser* browser,
+                                                  bool populate_tabs);
+  // Gets the |tab_strip_model| and |tab_index| for the given |tab_contents|.
+  static bool GetTabStripModel(const TabContents* tab_contents,
+                               TabStripModel** tab_strip_model,
+                               int* tab_index);
+  static bool GetDefaultTab(Browser* browser,
+                            TabContentsWrapper** contents,
+                            int* tab_id);
+  // Any out parameter (|browser|, |tab_strip|, |contents|, & |tab_index|) may
+  // be NULL and will not be set within the function.
+  static bool GetTabById(int tab_id, Profile* profile, bool incognito_enabled,
+                         Browser** browser,
+                         TabStripModel** tab_strip,
+                         TabContentsWrapper** contents,
+                         int* tab_index);
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_UTIL_H__