Functionality has been requested in the Extension API for Javascript to...

chrome/browser/extensions/extension_tabs_module_constants.cc

 // Copyright (c) 2009 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/browser/extensions/extension_tabs_module_constants.h"
 
 namespace extension_tabs_module_constants {
 
 const wchar_t kDataKey[] = L"data";
 const wchar_t kFavIconUrlKey[] = L"favIconUrl";
@@ skipping 22 matching lines @@
 
 const char kStatusValueComplete[] = "complete";
 const char kStatusValueLoading[] = "loading";
 
 const char kNoCurrentWindowError[] = "No current window";
 const char kNoLastFocusedWindowError[] = "No last-focused window";
 const char kWindowNotFoundError[] = "No window with id: *.";
 const char kTabNotFoundError[] = "No tab with id: *.";
 const char kNoSelectedTabError[] = "No selected tab";
 const char kInvalidUrlError[] = "Invalid url: \"*\".";
+const char kInternalVisibleTabCaptureError[] = 
+    "Internal error while trying to capture visible region of the current tab";
+const char kNotImplementedError[] = "This call is not yet implemented";
 
 const char kGetWindowFunction[] = "windows.get";
 const char kGetCurrentWindowFunction[] = "windows.getCurrent";
 const char kGetLastFocusedWindowFunction[] = "windows.getLastFocused";
 const char kGetAllWindowsFunction[] = "windows.getAll";
 const char kCreateWindowFunction[] = "windows.create";
 const char kUpdateWindowFunction[] = "windows.update";
 const char kRemoveWindowFunction[] = "windows.remove";
 
 const char kGetTabFunction[] = "tabs.get";
 const char kGetSelectedTabFunction[] = "tabs.getSelected";
 const char kGetAllTabsInWindowFunction[] = "tabs.getAllInWindow";
 const char kCreateTabFunction[] = "tabs.create";
 const char kUpdateTabFunction[] = "tabs.update";
 const char kMoveTabFunction[] = "tabs.move";
 const char kRemoveTabFunction[] = "tabs.remove";
 const char kDetectTabLanguageFunction[] = "tabs.detectLanguage";
+const char kCaptureVisibleTabFunction[] = "tabs.captureVisibleTab";
 
 }  // namespace extension_tabs_module_constants