GitLab

-The Trace method was missing EventTargetWithInlineData::Trace call
-Using ActiveScriptWrappable now so EditContext wrapper object remains alive
till the execution context is valid and when the composition events arrive,
they can be processed properly by the event listeners for the EditContext.
- Also removed an invalid test case that had a global reference to EditContext
which was causing memory leaks

Test: run_web_tests web_tests/editing/input/edit-context.html

Bug: 1023351, 1023242

Change-Id: If7e9d7ebea195095b0ac5048cd0864d3e0b730f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1911280Reviewed-by: Kent Tamura <tkent@chromium.org>
Commit-Queue: Anupam Snigdha <snianu@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#714523}