Revert of Disable WebNavigationApiTest.OpenTab on Windows. (patchset #1 of...

Revert of Disable WebNavigationApiTest.OpenTab on Windows. (patchset #1 of https://codereview.chromium.org/464243002/)

Reason for revert:
underlying issue should be fixed

Original issue's description:
> Disable WebNavigationApiTest.OpenTab on Windows.
> 
> BUG=402943
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=289215

TBR=joaodasilva@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=402943

Review URL: https://codereview.chromium.org/469223002

Cr-Commit-Position: refs/heads/master@{#289508}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289508 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc

@@ -380,13 +380,7 @@ IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, SrcDoc) {
   ASSERT_TRUE(RunExtensionTest("webnavigation/srcdoc")) << message_;
 }
 
-// Crashes on Windows. http://crbug.com/402943
-#if defined(OS_WIN)
-#define MAYBE_OpenTab DISABLED_OpenTab
-#else
-#define MAYBE_OpenTab OpenTab
-#endif
-IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, MAYBE_OpenTab) {
+IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, OpenTab) {
   ASSERT_TRUE(StartEmbeddedTestServer());
   ASSERT_TRUE(RunExtensionTest("webnavigation/openTab")) << message_;
 }