I reverted this CL (https://codereview.chromium.org/1840993002) since it seems to break several tests on Android.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/05c378251e5bffa1567b182ab05fa05f4aea732b

commit 05c378251e5bffa1567b182ab05fa05f4aea732b
Author: changwan <changwan@chromium.org>
Date: Thu May 12 01:21:42 2016

Reland "Add InputConnection-to-JavaScript tests for key input"

Fixed flakiness by fitting all the elements into a single page.
I suspect that scrolling in DOMUtils#scrollNodeIntoView isn't working
correctly. The same issue was investigated by yabinh@ to enable
FocusedEditableTextFieldZoomTest at some point.

>
>commitText() is in effect almost the same as calling setComposingText() and
>finishComposingText() in a batch edit.
>
>However, one difference is that the latter triggers composition events
>in the DOM. This test clarifies the difference.
>
>This is the first Java-to-JavaScript test for key input system.
>
>BUG= 578016 
>
>Review-Url: https://codereview.chromium.org/1840993002
>Cr-Commit-Position: refs/heads/master@{#391176}

BUG= 578016 ,  608656 

Review-Url: https://codereview.chromium.org/1840993002
Cr-Commit-Position: refs/heads/master@{#393132}

[modify] https://crrev.com/05c378251e5bffa1567b182ab05fa05f4aea732b/content/public/android/javatests/src/org/chromium/content/browser/input/ImeLollipopTest.java
[modify] https://crrev.com/05c378251e5bffa1567b182ab05fa05f4aea732b/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
[modify] https://crrev.com/05c378251e5bffa1567b182ab05fa05f4aea732b/content/shell/android/javatests/src/org/chromium/content_shell_apk/ContentShellTestBase.java
[add] https://crrev.com/05c378251e5bffa1567b182ab05fa05f4aea732b/content/test/data/android/input/input_forms.html