Chrome Version: Chrome Canary 67.0.3376.0
OS: Android

What steps will reproduce the problem?
(1) Start the browser
(2) Open a new incognito tab
(3) Tab the tab switcher icon
(4) From the menu, select "Close incognito tabs"

The resulting crash happens 100% of the time.  I found it while implementing part of the VR UI, but the crash also happens in Canary via normal UI.

The actual crash is due to nested trace events, due to nested TabModelImpl.setIndex() calls.  The calls may be on different managers (incognito vs not), but the tracing doesn't care.

A snippet of the trace:

java.lang.IllegalArgumentException: Multiple pending trace events can't have the same name
   at org.chromium.base.EarlyTraceEvent.begin(EarlyTraceEvent.java:170)
   at org.chromium.base.TraceEvent.begin(TraceEvent.java:353)
   at org.chromium.base.TraceEvent.begin(TraceEvent.java:344)
   at org.chromium.chrome.browser.tabmodel.TabModelImpl.setIndex(TabModelImpl.java:476)
   at org.chromium.chrome.browser.tabmodel.TabModelUtils.setIndex(TabModelUtils.java:154)
   at org.chromium.chrome.browser.tabmodel.TabModelSelectorImpl.selectModel(TabModelSelectorImpl.java:233)
   at org.chromium.chrome.browser.tabmodel.TabModelImpl.setIndex(TabModelImpl.java:480)
   at org.chromium.chrome.browser.tabmodel.TabModelImpl.removeTabAndSelectNext(TabModelImpl.java:571)
   at org.chromium.chrome.browser.tabmodel.TabModelImpl.startTabClosure(TabModelImpl.java:530)
   at org.chromium.chrome.browser.tabmodel.TabModelImpl.closeTab(TabModelImpl.java:365)
   at org.chromium.chrome.browser.tabmodel.TabModelImpl.closeAllTabs(TabModelImpl.java:423)
   at org.chromium.chrome.browser.tabmodel.TabModelImpl.closeAllTabs(TabModelImpl.java:401)
   at org.chromium.chrome.browser.tabmodel.IncognitoTabModel.closeAllTabs(IncognitoTabModel.java:138)