commit 94f2b4c77289230dc50c5fbb43a2bad7bc9792ef
author Julian Kung <juliankung@chromium.org> Mon Jun 10 18:02:50 2019
committer Commit Bot <commit-bot@chromium.org> Mon Jun 10 18:02:50 2019
tree a33acfab6a2ef7c1647211c612fcc5ea210e97a7
parent b443ce58591d814a110ffd709bfd24a5be2d7817

Updated SendKeysToElement to append text

Updated SendKeysToElement to be W3C compliant by adding the spec steps:
1) Let current text length be the JavaScript string's length of element's
API value.
2) Set the text insertion caret using set selection range using current
text length for both the start and end parameters.

Previously, SendKeysToElement would not place the text insertion caret
to the end of the textbox. Additionally wrote unit test and html
"testSendKeysToElementAppend" in run_py_tests.py to test correct
implementation.

R=crouleau@google.com, zhanliang@google.com

Test: testSendKeysToElementAppend in run_py_tests.py
Bug: chromedriver:2704
Change-Id: I602c92dd529078ef9ce4a15d43f690f5cb1f7c88
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1648815
Commit-Queue: Julian Kung <juliankung@google.com>
Auto-Submit: Julian Kung <juliankung@google.com>
Reviewed-by: John Chen <johnchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#667645}