clang/win: Let remaining chromium_code targets build with -Wextra.

chrome/browser/ui/views/accessibility/navigation_accessibility_uitest_win.cc

Index: chrome/browser/ui/views/accessibility/navigation_accessibility_uitest_win.cc
diff --git a/chrome/browser/ui/views/accessibility/navigation_accessibility_uitest_win.cc b/chrome/browser/ui/views/accessibility/navigation_accessibility_uitest_win.cc
index 71c57a385574813337b4947789bd858eefc6b640..d1a9795c927b398af92c000028a92a710be0bd20 100644
--- a/chrome/browser/ui/views/accessibility/navigation_accessibility_uitest_win.cc
+++ b/chrome/browser/ui/views/accessibility/navigation_accessibility_uitest_win.cc
@@ -238,11 +238,11 @@ IN_PROC_BROWSER_TEST_F(NavigationAccessibilityTest,
               << " name=" << name;
 
     // We should get only focus events.
-    EXPECT_EQ(EVENT_OBJECT_FOCUS, event);
+    EXPECT_EQ(static_cast<DWORD>(EVENT_OBJECT_FOCUS), event);
 
     // We should get only focus events on document objects. (On a page with
     // JavaScript or autofocus, additional focus events would be expected.)
-    EXPECT_EQ(ROLE_SYSTEM_DOCUMENT, role);
+    EXPECT_EQ(static_cast<DWORD>(ROLE_SYSTEM_DOCUMENT), role);
 
     // We shouldn't get any events on the first page because from the time
     // we start monitoring, the user has already initiated a load to the