Change desktop and ES 3.0 to always use sized internal texture formats.

Review URL: https://codereview.chromium.org/806943002
Use SkPaint::getFontBounds() for text bounding boxes in pictures.

Now that SkTextBlobs have landed, this is a perf no-op, but it at least lets us eliminate a bunch of questionable hacks.

CQ_EXTRA_TRYBOTS=client.skia:Test-Win7-ShuttleA-HD2000-x86-Debug-Trybot,Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Debug-Trybot

BUG=skia:

Review URL: https://codereview.chromium.org/805983003
Revert of Change desktop and ES 3.0 to always use sized internal texture formats. (patchset #2 id:20001 of https://codereview.chromium.org/806943002/)

Reason for revert:
Failing GMs on Mac, Windows and Ubuntu12.

Original issue's description:
> Change desktop and ES 3.0 to always use sized internal texture formats.
>
> Committed: https://skia.googlesource.com/skia/+/bc02bf0ee4221604796cd6d0394ca3af60c0a579

TBR=bsalomon@google.com
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/805193003
Revert of Use SkPaint::getFontBounds() for text bounding boxes in pictures. (patchset #1 id:1 of https://codereview.chromium.org/805983003/)

Reason for revert:
Test-Win7-ShuttleA-HD2000-x86-Debug-GDI

Original issue's description:
> Use SkPaint::getFontBounds() for text bounding boxes in pictures.
>
> Now that SkTextBlobs have landed, this is a perf no-op, but it at least lets us eliminate a bunch of questionable hacks.
>
> CQ_EXTRA_TRYBOTS=client.skia:Test-Win7-ShuttleA-HD2000-x86-Debug-Trybot,Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Debug-Trybot
>
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/02d2b9831579173e783569530ab7bae08de907e9

TBR=reed@google.com,mtklein@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/789793004