Do not group Canvas profiles

Show each Canvas profile as a separate entry with unique title instead of grouping them under "Trace Log 0" with titles "Run X".

BUG=None

Review URL: https://codereview.chromium.org/183163004

git-svn-id: svn://svn.chromium.org/blink/trunk@168052 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix a crash when spell checker is triggered for an editable element which is in an author ShadowRoot of an INPUT element.

enclosingTextFormControl() should handle only elements in UA ShadowRoot.

BUG=343040
TEST=automated

Review URL: https://codereview.chromium.org/181273002

git-svn-id: svn://svn.chromium.org/blink/trunk@168053 bbb929c8-8fbe-4397-9dbb-9b2b20218538