Enable TabCaptureApiTests.GrantForChromePages on windows.

chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc

Index: chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
diff --git a/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc b/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
index 83d27dbc32f6451644db68b013a9c41898565df0..b1abf6dac33661d057803540dcc7d1996dcaf2fb 100644
--- a/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
+++ b/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
@@ -256,16 +256,8 @@ IN_PROC_BROWSER_TEST_F(TabCaptureApiTest, MAYBE_FullscreenEvents) {
   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
-// Times out on Win dbg bots: http://crbug.com/177163
-// #if defined(OS_WIN) && !defined(NDEBUG)
-// Times out on all Win bots: http://crbug.com/294431
-#if defined(OS_WIN)
-#define MAYBE_GrantForChromePages DISABLED_GrantForChromePages
-#else
-#define MAYBE_GrantForChromePages GrantForChromePages
-#endif
 // Make sure tabCapture API can be granted for Chrome:// pages.
-IN_PROC_BROWSER_TEST_F(TabCaptureApiTest, MAYBE_GrantForChromePages) {
+IN_PROC_BROWSER_TEST_F(TabCaptureApiTest, GrantForChromePages) {
   ExtensionTestMessageListener before_open_tab("ready1", true);
   ASSERT_TRUE(RunExtensionSubtest("tab_capture/experimental",
                                   "active_tab_chrome_pages.html")) << message_;