Convert WindowOpenDisposition to an enum class.

content/browser/site_per_process_browsertest.cc

Index: content/browser/site_per_process_browsertest.cc
diff --git a/content/browser/site_per_process_browsertest.cc b/content/browser/site_per_process_browsertest.cc
index fb5b6d317e77560c7d379c1f94e647653e08002a..f579093fb7123c1d014fecfc0aed3222740c7aa1 100644
--- a/content/browser/site_per_process_browsertest.cc
+++ b/content/browser/site_per_process_browsertest.cc
@@ -7253,9 +7253,11 @@ IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
   // Now, simulate that both ShowView messages arrive by showing both of the
   // pending WebContents.
   web_contents()->ShowCreatedWindow(process1->GetID(), filter1->routing_id(),
-                                    NEW_FOREGROUND_TAB, gfx::Rect(), true);
+                                    WindowOpenDisposition::NEW_FOREGROUND_TAB,
+                                    gfx::Rect(), true);
   web_contents()->ShowCreatedWindow(process2->GetID(), filter2->routing_id(),
-                                    NEW_FOREGROUND_TAB, gfx::Rect(), true);
+                                    WindowOpenDisposition::NEW_FOREGROUND_TAB,
+                                    gfx::Rect(), true);
 
   // Verify that both shells were properly created.
   EXPECT_EQ(3u, Shell::windows().size());