Disable SnapshotAuraTest.FullScreenWindow in win/dbg builds, it times out.

Bug: 852512
Change-Id: Ie118dcafd7dd46f62f03dbbd95091db24cb7ef26
Reviewed-on: https://chromium-review.googlesource.com/1099646Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567037}

ui/snapshot/snapshot_aura_unittest.cc

@@ -186,7 +186,13 @@ class SnapshotAuraTest : public testing::Test {
   DISALLOW_COPY_AND_ASSIGN(SnapshotAuraTest);
 };
 
-TEST_F(SnapshotAuraTest, FullScreenWindow) {
+#if defined(OS_WIN) && !defined(NDEBUG)
+// https://crbug.com/852512
+#define MAYBE_FullScreenWindow DISABLED_FullScreenWindow
+#else
+#define MAYBE_FullScreenWindow FullScreenWindow
+#endif
+TEST_F(SnapshotAuraTest, MAYBE_FullScreenWindow) {
 #if defined(OS_WIN)
   // TODO(https://crbug.com/850556): Make work on Win10.
   base::win::Version version = base::win::GetVersion();