Separate validation failures from other failures in ExecuteCodeFunction.

chrome/browser/extensions/api/tabs/tabs_constants.cc

 // Copyright (c) 2012 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/api/tabs/tabs_constants.h"
 
 namespace extensions {
 namespace tabs_constants {
 
 const char kActiveKey[] = "active";
@@ skipping 63 matching lines @@
     "mode.";
 const char kCanOnlyMoveTabsWithinNormalWindowsError[] = "Tabs can only be "
     "moved to and from normal windows.";
 const char kCanOnlyMoveTabsWithinSameProfileError[] = "Tabs can only be moved "
     "between windows in the same profile.";
 const char kFrameNotFoundError[] = "No frame with id * in tab *.";
 const char kNoCrashBrowserError[] =
     "I'm sorry. I'm afraid I can't do that.";
 const char kNoCurrentWindowError[] = "No current window";
 const char kNoLastFocusedWindowError[] = "No last-focused window";
+const char kNoTabInBrowserWindowError[] = "There is no tab in browser window.";
 const char kPerOriginOnlyInAutomaticError[] = "Can only set scope to "
     "\"per-origin\" in \"automatic\" mode.";
 const char kWindowNotFoundError[] = "No window with id: *.";
 const char kTabIndexNotFoundError[] = "No tab at index: *.";
 const char kTabNotFoundError[] = "No tab with id: *.";
 const char kCannotDiscardTab[] = "Cannot discard tab with id: *.";
 const char kCannotFindTabToDiscard[] = "Cannot find a tab to discard.";
 const char kTabStripNotEditableError[] =
     "Tabs cannot be edited right now (user may be dragging a tab).";
 const char kNoSelectedTabError[] = "No selected tab";
@@ skipping 12 matching lines @@
 const char kCannotUpdateMuteDisabled[] =
     "Failed to update mute state for tab *, --* must be enabled";
 const char kCannotUpdateMuteCaptured[] =
     "Cannot update mute state for tab *, tab has audio or video currently "
     "being captured";
 const char kCannotDetermineLanguageOfUnloadedTab[] =
     "Cannot determine language: tab not loaded";
 
 }  // namespace tabs_constants
 }  // namespace extensions