Disable MediaSessionServiceImplBrowserTest.* under LSan

One of the tests was previously disabled in #565985, but the other tests
fail in the same way, so this disables them too.

TBR=mlamouri

Bug: 850870
Change-Id: I3c222c3d2e7b01dec946cf93f46fa5239f8c13de
Reviewed-on: https://chromium-review.googlesource.com/1097328Reviewed-by: Hans Wennborg <hans@chromium.org>
Commit-Queue: Hans Wennborg <hans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#566424}

content/browser/media/session/media_session_service_impl_browsertest.cc

@@ -160,8 +160,15 @@ IN_PROC_BROWSER_TEST_F(MediaSessionServiceImplBrowserTest,
 // observers to wait for the message to be processed on the MediaSessionObserver
 // side.
 
+#if defined(LEAK_SANITIZER)
+// TODO(crbug.com/850870) Plug the leaks.
+#define MAYBE_ResetServiceWhenNavigatingAway \
+  DISABLED_ResetServiceWhenNavigatingAway
+#else
+#define MAYBE_ResetServiceWhenNavigatingAway ResetServiceWhenNavigatingAway
+#endif
 IN_PROC_BROWSER_TEST_F(MediaSessionServiceImplBrowserTest,
-                       ResetServiceWhenNavigatingAway) {
+                       MAYBE_ResetServiceWhenNavigatingAway) {
   NavigateToURL(shell(), GetTestUrl(".", "title1.html"));
   EnsurePlayer();
 
@@ -182,8 +189,16 @@ IN_PROC_BROWSER_TEST_F(MediaSessionServiceImplBrowserTest,
   EXPECT_EQ(0u, GetService()->actions().size());
 }
 
+#if defined(LEAK_SANITIZER)
+// TODO(crbug.com/850870) Plug the leaks.
+#define MAYBE_DontResetServiceForSameDocumentNavigation \
+  DISABLED_DontResetServiceForSameDocumentNavigation
+#else
+#define MAYBE_DontResetServiceForSameDocumentNavigation \
+  DontResetServiceForSameDocumentNavigation
+#endif
 IN_PROC_BROWSER_TEST_F(MediaSessionServiceImplBrowserTest,
-                       DontResetServiceForSameDocumentNavigation) {
+                       MAYBE_DontResetServiceForSameDocumentNavigation) {
   NavigateToURL(shell(), GetTestUrl(".", "title1.html"));
   EnsurePlayer();