[chromedriver] Fix 3 bugs about web view, window handle and target window.

chrome/test/chromedriver/session.cc

Index: chrome/test/chromedriver/session.cc
diff --git a/chrome/test/chromedriver/session.cc b/chrome/test/chromedriver/session.cc
index 996b205a127edf8fc9e066212cf939b4c50f9a7e..7358d6792c35c43cc3f745a4e64ff9452baecc01 100644
--- a/chrome/test/chromedriver/session.cc
+++ b/chrome/test/chromedriver/session.cc
@@ -43,19 +43,10 @@ Status Session::GetTargetWindow(WebView** web_view) {
   if (!chrome)
     return Status(kNoSuchWindow, "no chrome started in this session");
 
-  std::list<WebView*> web_views;
-  Status status = chrome->GetWebViews(&web_views);
+  Status status = chrome->GetWebViewById(window, web_view);
   if (status.IsError())
-    return status;
-
-  for (std::list<WebView*>::const_iterator it = web_views.begin();
-       it != web_views.end(); ++it) {
-    if ((*it)->GetId() == window) {
-      *web_view = *it;
-      return Status(kOk);
-    }
-  }
-  return Status(kNoSuchWindow, "target window already closed");
+    status = Status(kNoSuchWindow, "target window already closed", status);
+  return status;
 }
 
 void Session::SwitchToTopFrame() {