chrome_public_test_apk(org.chromium.chrome.browser.TabsTest#testHideKeyboard) failing on 2 builders, and chromium.android/Lollipop Tablet Tester. 

Type: build-failure

Builders failed on: 
- KitKat Tablet Tester: 
  https://build.chromium.org/p/chromium.android/builders/KitKat%20Tablet%20Tester
- Marshmallow Tablet Tester: 
  https://build.chromium.org/p/chromium.android/builders/Marshmallow%20Tablet%20Tester

-Lollipop Tablet Tester
https://uberchromegw.corp.google.com/i/chromium.android/builders/Lollipop%20Tablet%20Tester/builds/5975

The print stack is:
C  867.831s Main  [FAIL] org.chromium.chrome.browser.TabsTest#testHideKeyboard:
C  867.831s Main  java.lang.AssertionError
C  867.831s Main  	at org.chromium.content.browser.input.ImeUtils.checkCondition(ImeUtils.java:188)
C  867.831s Main  	at org.chromium.content.browser.input.ThreadedInputConnection.assertOnImeThread(ThreadedInputConnection.java:249)
C  867.831s Main  	at org.chromium.content.browser.input.ThreadedInputConnection.requestAndWaitForTextInputState(ThreadedInputConnection.java:221)
C  867.831s Main  	at org.chromium.content.browser.input.ThreadedInputConnection.getTextBeforeCursor(ThreadedInputConnection.java:550)
C  867.831s Main  	at com.android.internal.view.IInputConnectionWrapper.executeMessage(IInputConnectionWrapper.java:225)
C  867.831s Main  	at com.android.internal.view.IInputConnectionWrapper$MyHandler.handleMessage(IInputConnectionWrapper.java:78)
C  867.831s Main  	at android.os.Handler.dispatchMessage(Handler.java:102)
C  867.831s Main  	at android.os.Looper.loop(Looper.java:135)
C  867.831s Main  	at android.os.HandlerThread.run(HandlerThread.java:61)