[Extensions] Re-enable a Download API test on Windows that

was disabled for flakiness.

The SearchPauseResumeCancelGetFileIconIncognito test was disabled
a while back for flakiness, but is no longer flaky on the bots.

Bug: 874946
Change-Id: I859b05e760ca95f9d1e80ef776b43424c17cc5cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2229332Reviewed-by: Archana Simha <archanasimha@chromium.org>
Commit-Queue: David Bertoni <dbertoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776117}

chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc

@@ -1481,21 +1481,13 @@ IN_PROC_BROWSER_TEST_F(DownloadExtensionTest,
   ASSERT_EQ(items[2]->GetTargetFilePath().value(), item_name);
 }
 
-// https://crbug.com/874946, flaky on Win.
-#if defined(OS_WIN)
-#define MAYBE_DownloadExtensionTest_SearchPauseResumeCancelGetFileIconIncognito \
-  DISABLED_DownloadExtensionTest_SearchPauseResumeCancelGetFileIconIncognito
-#else
-#define MAYBE_DownloadExtensionTest_SearchPauseResumeCancelGetFileIconIncognito \
-  DownloadExtensionTest_SearchPauseResumeCancelGetFileIconIncognito
-#endif
 // Test that incognito downloads are only visible in incognito contexts, and
 // test that on-record downloads are visible in both incognito and on-record
 // contexts, for DownloadsSearchFunction, DownloadsPauseFunction,
 // DownloadsResumeFunction, and DownloadsCancelFunction.
 IN_PROC_BROWSER_TEST_F(
     DownloadExtensionTest,
-    MAYBE_DownloadExtensionTest_SearchPauseResumeCancelGetFileIconIncognito) {
+    DownloadExtensionTest_SearchPauseResumeCancelGetFileIconIncognito) {
   std::unique_ptr<base::Value> result_value;
   base::ListValue* result_list = NULL;
   base::DictionaryValue* result_dict = NULL;