Disabling MediaSessionVisibilityBrowserTests for WMPA

content/browser/media/session/media_session_visibility_browsertest.cc

Index: content/browser/media/session/media_session_visibility_browsertest.cc
diff --git a/content/browser/media/session/media_session_visibility_browsertest.cc b/content/browser/media/session/media_session_visibility_browsertest.cc
index dc9f28acebbe4dea4ae502f8b08dd496021ab734..01e42325551b75255788c6dfd83986b751ff2148 100644
--- a/content/browser/media/session/media_session_visibility_browsertest.cc
+++ b/content/browser/media/session/media_session_visibility_browsertest.cc
@@ -287,7 +287,8 @@ VisibilityTestData kTestParams[] = {
 Pipeline kPipelines[] = {
     Pipeline::WMPI,
 #if defined(OS_ANDROID)
-    Pipeline::WMPA,
+    // Disabling WMPA tests because of https://crbug.com/646312
+    // Pipeline::WMPA,
 #endif  // defined(OS_ANDROID)
 };