Disable WebViewTest.WebViewInBackgroundPage on Windows because it times out often

chrome/browser/apps/web_view_browsertest.cc

Index: chrome/browser/apps/web_view_browsertest.cc
diff --git a/chrome/browser/apps/web_view_browsertest.cc b/chrome/browser/apps/web_view_browsertest.cc
index 55c25c771b02e2e36ec73e64cf0692883b54055f..e62ce49c98f5b80c670605168c355b2179885b56 100644
--- a/chrome/browser/apps/web_view_browsertest.cc
+++ b/chrome/browser/apps/web_view_browsertest.cc
@@ -2253,7 +2253,15 @@ IN_PROC_BROWSER_TEST_F(WebViewCaptureTest,
   TestHelper("testScreenshotCapture", "web_view/shim", NO_TEST_SERVER);
 }
 
-IN_PROC_BROWSER_TEST_F(WebViewTest, WebViewInBackgroundPage) {
+#if defined(OS_WIN)
+// Test is disabled on Windows because it times out often.
+// 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_;
 }