Rename style(bool) to styleOrFirstLineStyle(bool)

Rename style(bool) to styleOrFirstLineStyle(bool)

Having bool arguments to functions isn't ideal but a naming such as
styleOrFirstLineStyle makes it obvious what's going on in most cases.

This patch is preparation for moving inline definitions of
firstLineStyle() and styleOrFirstLineStyle() to a separate header file
so that RenderObject.h doesn't have to include StyleEngine.h (and in
extension most of the style system). In turn, this also makes it
easier to in the future remove the document.h include from
RenderObject.h, further removing intra-dependendcies between header
files in Blink.

This is a mechanical change only. Minor clean-ups will follow.

[davve, 2014-06-25 14:16:58]

I'm testing the waters here. My objective is to reduce re-compilation
when making changes to common headers in Blink. One thing that stood
out was that RenderObject.h included StyleEngine.h for only one
inlined method: firstLineStyle(). By moving the definition to a
separate header file, only included in the compilation units that
actually calls firstLineStyle(), we have to recompile around 400 less
files.

When doing the move I discovered I needed to move style(bool) too.
Finding all places that calls style(bool) was I little bit trickier
since the name is so generic, so I renamed it locally.

The result I ended up with wasn't too bad and let me straighten out
some confusing code (posted in a follow-up), so I thought I could just
post this.

Follow-up is https://codereview.chromium.org/351033003/

The added header file and final CL for this series is
https://codereview.chromium.org/358603002/

[abarth-chromium, 2014-06-25 19:48:19]

I'm not the correct reviewer for this change.  You probably want esprehn or
eseidel

[davve, 2014-06-27 11:46:45]

Closing this since we're trying to head down another path in
https://codereview.chromium.org/351213002/