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

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

Index: chrome/browser/extensions/api/desktop_capture/desktop_capture_api.cc
diff --git a/chrome/browser/extensions/api/desktop_capture/desktop_capture_api.cc b/chrome/browser/extensions/api/desktop_capture/desktop_capture_api.cc
index 6fa89dda112ea77462bdb97af4796e09604e4025..622f2616f9d567f5c63184de2b1a0a886447918c 100644
--- a/chrome/browser/extensions/api/desktop_capture/desktop_capture_api.cc
+++ b/chrome/browser/extensions/api/desktop_capture/desktop_capture_api.cc
@@ -74,12 +74,12 @@ bool DesktopCaptureChooseDesktopMediaFunction::RunAsync() {
     target_name = base::UTF8ToUTF16(content::IsOriginSecure(origin) ?
         net::GetHostAndOptionalPort(origin) : origin.spec());
 
-    if (!params->target_tab->id) {
+    if (params->target_tab->id < 0) {
       error_ = kNoTabIdError;
       return false;
     }
 
-    if (!ExtensionTabUtil::GetTabById(*(params->target_tab->id), GetProfile(),
+    if (!ExtensionTabUtil::GetTabById(params->target_tab->id, GetProfile(),
                                       true, NULL, NULL, &web_contents, NULL)) {
       error_ = kInvalidTabIdError;
       return false;