Re-enable a browser test on Windows

chrome/browser/chrome_site_per_process_browsertest.cc

Index: chrome/browser/chrome_site_per_process_browsertest.cc
diff --git a/chrome/browser/chrome_site_per_process_browsertest.cc b/chrome/browser/chrome_site_per_process_browsertest.cc
index 8e161e6b6724972b663042067ef9d0ee6855fbbe..de4374a469d5eb0f8268a137353cc3bfd927c6ff 100644
--- a/chrome/browser/chrome_site_per_process_browsertest.cc
+++ b/chrome/browser/chrome_site_per_process_browsertest.cc
@@ -322,20 +322,11 @@ class ChromeSitePerProcessPDFTest : public ChromeSitePerProcessTest {
   DISALLOW_COPY_AND_ASSIGN(ChromeSitePerProcessPDFTest);
 };
 
-// TODO(ekaramad): This test is flaky on Windows 7. Enable it when the issue is
-// fixed ((https://crbug.com/666379).
-#if defined(OS_WIN)
-#define MAYBE_EmbeddedPDFInsideCrossOriginFrame \
-  DISABLED_EmbeddedPDFInsideCrossOriginFrame
-#else
-#define MAYBE_EmbeddedPDFInsideCrossOriginFrame \
-  EmbeddedPDFInsideCrossOriginFrame
-#endif
 // This test verifies that when navigating an OOPIF to a page with <embed>-ed
 // PDF, the guest is properly created, and by removing the embedder frame, the
 // guest is properly destroyed (https://crbug.com/649856).
 IN_PROC_BROWSER_TEST_F(ChromeSitePerProcessPDFTest,
-                       MAYBE_EmbeddedPDFInsideCrossOriginFrame) {
+                       EmbeddedPDFInsideCrossOriginFrame) {
   // Navigate to a page with an <iframe>.
   GURL main_url(embedded_test_server()->GetURL("a.com", "/iframe.html"));
   ui_test_utils::NavigateToURL(browser(), main_url);