extensions: tabs: set tab id to -1 for app/devtools windows

chrome/browser/extensions/api/desktop_capture/desktop_capture_api.cc

 // Copyright 2013 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/desktop_capture/desktop_capture_api.h"
 
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 56 matching lines @@
 
     if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
             switches::kAllowHttpScreenCapture) &&
         !content::IsOriginSecure(origin)) {
       error_ = kTabUrlNotSecure;
       return false;
     }
     target_name = base::UTF8ToUTF16(content::IsOriginSecure(origin) ?
         net::GetHostAndOptionalPort(origin) : origin.spec());
 
-    if (!params->target_tab->id) {
+    if (!params->target_tab->id ||
+        *params->target_tab->id == api::tabs::TAB_ID_NONE) {
       error_ = kNoTabIdError;
       return false;
     }
 
     if (!ExtensionTabUtil::GetTabById(*(params->target_tab->id), GetProfile(),
                                       true, NULL, NULL, &web_contents, NULL)) {
       error_ = kInvalidTabIdError;
       return false;
     }
     DCHECK(web_contents);
   } else {
     origin = extension()->url();
     target_name = base::UTF8ToUTF16(extension()->name());
     web_contents = GetSenderWebContents();
     DCHECK(web_contents);
   }
 
   return Execute(params->sources, web_contents, origin, target_name);
 }
 
 DesktopCaptureCancelChooseDesktopMediaFunction::
     DesktopCaptureCancelChooseDesktopMediaFunction() {}
 
 DesktopCaptureCancelChooseDesktopMediaFunction::
     ~DesktopCaptureCancelChooseDesktopMediaFunction() {}
 
 }  // namespace extensions