content_browsertests is periodically failing on https://uberchromegw.corp.google.com/i/chromium.android/builders/Marshmallow%20Tablet%20Tester/ with a failure in MediaSessionVisibilityBrowserTest_AndroidPipeline_NosuspendOnHide.TestSessionSuspendedWhenHiddenAfterContentPause.

Example failures:
https://uberchromegw.corp.google.com/i/chromium.android/builders/Marshmallow%20Tablet%20Tester/builds/4264/steps/content_browsertests/logs/stdio
https://uberchromegw.corp.google.com/i/chromium.android/builders/Marshmallow%20Tablet%20Tester/builds/4258/steps/content_browsertests/logs/stdio
https://uberchromegw.corp.google.com/i/chromium.android/builders/Marshmallow%20Tablet%20Tester/builds/4255/steps/content_browsertests/logs/stdio
https://uberchromegw.corp.google.com/i/chromium.android/builders/Marshmallow%20Tablet%20Tester/builds/4249/steps/content_browsertests/logs/stdio


C  923.972s Main  ********************************************************************************
C  923.972s Main  Detailed Logs
C  923.972s Main  ********************************************************************************
C  923.973s Main  [UNKNOWN] MediaSessionVisibilityBrowserTest_AndroidPipeline_NosuspendOnHide.TestSessionActiveWhenHiddenWhilePlaying:
C  923.973s Main  [ RUN      ] MediaSessionVisibilityBrowserTest_AndroidPipeline_NosuspendOnHide.TestSessionActiveWhenHiddenWhilePlaying
C  923.973s Main  [ERROR:devtools_http_handler.cc(228)] Cannot start http server for devtools. Stop devtools.
C  923.973s Main  [ERROR:layer_tree_host_impl.cc(2260)] Forcing zero-copy tile initialization as worker context is missing
C  923.973s Main  [ERROR:shell_android.cc(70)] Not implemented reached in void content::Shell::PlatformSetTitle(const string16&): Test page for MediaSession.java
C  923.973s Main  
C  923.973s Main  FAILURES!!! Tests run: 1, Failures: 0, Errors: 1
C  923.973s Main  ********************************************************************************
C  923.973s Main  Summary
C  923.973s Main  ********************************************************************************
C  923.975s Main  [==========] 1213 tests ran.
C  923.975s Main  [  PASSED  ] 1212 tests.
C  923.975s Main  [  FAILED  ] 1 test, listed below:
C  923.975s Main  [  FAILED  ] MediaSessionVisibilityBrowserTest_AndroidPipeline_NosuspendOnHide.TestSessionActiveWhenHiddenWhilePlaying (UNKNOWN)