<webview>: Don't reset allowtransparency and allowscaling between createGuest and attachGuest

chrome/browser/apps/guest_view/web_view_browsertest.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 "base/path_service.h"
 #include "base/process/process.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
@@ skipping 2719 matching lines @@
 // http://crbug.com/403325
 #define MAYBE_WebViewInBackgroundPage \
     DISABLED_WebViewInBackgroundPage
 #else
 #define MAYBE_WebViewInBackgroundPage WebViewInBackgroundPage
 #endif
 IN_PROC_BROWSER_TEST_F(WebViewTest, MAYBE_WebViewInBackgroundPage) {
   ASSERT_TRUE(RunExtensionTest("platform_apps/web_view/background"))
       << message_;
 }
+
+// This test verifies that the allowtransparency attribute properly propagates
+IN_PROC_BROWSER_TEST_F(WebViewTest, AllowTransparencyAndAllowScalingPropagate) {
+  LoadAppWithGuest("web_view/simple");
+
+  ASSERT_TRUE(!!GetGuestWebContents());
+  extensions::WebViewGuest* guest =
+      extensions::WebViewGuest::FromWebContents(GetGuestWebContents());
+  ASSERT_TRUE(guest->allow_transparency());
+  ASSERT_TRUE(guest->allow_scaling());
+}
+