Disable ECKEncryptedMediaTest.MultipleCdmTypes in debug builds

This test times out on the clang tot windows debug bots (32 & 64):
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/ToTWin%28dbg%29/2360
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/ToTWin64%28dbg%29/2335

TBR=tommi@chromium.org

Bug: 902310
Change-Id: I0ac5995fd573ff6505127ce5ef93ea26f4e8f164
Reviewed-on: https://chromium-review.googlesource.com/c/1471302Reviewed-by: Reid Kleckner <rnk@chromium.org>
Commit-Queue: Reid Kleckner <rnk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#631988}

chrome/browser/media/encrypted_media_browsertest.cc

@@ -937,7 +937,14 @@ IN_PROC_BROWSER_TEST_P(ECKEncryptedMediaTest, StorageIdTest) {
                        kUnitTestSuccess);
 }
 
-IN_PROC_BROWSER_TEST_P(ECKEncryptedMediaTest, MultipleCdmTypes) {
+// TODO(crbug.com/902310): Times out in debug builds.
+#ifdef NDEBUG
+#define MAYBE_MultipleCdmTypes MultipeCdmTypes
+#else
+#define MAYBE_MultipleCdmTypes DISABLED_MultipeCdmTypes
+#endif
+
+IN_PROC_BROWSER_TEST_P(ECKEncryptedMediaTest, MAYBE_MultipleCdmTypes) {
   base::StringPairs empty_query_params;
   RunMediaTestPage("multiple_cdm_types.html", empty_query_params, media::kEnded,
                    true);