This is the second patch of a series of patches to remove
ParserOutput::getText() calls from core. This series of patches should
be functionally equivalent to I2b4bcddb234f10fd8592570cb0496adf3271328e.
This patch replaces the calls to getText where the legacy parser is
called directly by creating a pipeline and invoking it on the generated.
These should probably eventually use the Content framework to generate
output instead of using Parser directly (T371008), which will also allow
them to transparently support Parsoid.
Bug: T293512
Change-Id: I45951a49e57a8031887ee6e4546335141d231c18
a3cf629d2f