Switch SkBitmapProcState's SkFractionalInt to 32.32.

Switch SkBitmapProcState's SkFractionalInt to 32.32.

16 bits are not enough to hold the integral part of fx in
Clamp_S32_opaque_D32_nofilter_DX_shaderproc.

Weirdly, no GM diffs on my desktop.

BUG=skia:3096
Committed: https://skia.googlesource.com/skia/+/179465150939c2f2420bfc15dc33825b1130e7f7

[mtklein, 2014-11-17 16:50:01]

mtklein@google.com changed reviewers:
+ mtklein@google.com, reed@google.com

[mtklein, 2014-11-17 16:50:04]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-11-17 16:51:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/733163003/1

[commit-bot: I haz the power, 2014-11-17 16:51:00]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2014-11-17 22:51 UTC

[commit-bot: I haz the power, 2014-11-17 16:51:03]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-11-17 16:51:04]

Presubmit check for 733163003-1 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit ERRORS **
Since the CL is editing public API, you must have an LGTM from one of:
('reed@chromium.org', 'reed@google.com', 'bsalomon@chromium.org',
'bsalomon@google.com', 'djsollen@chromium.org', 'djsollen@google.com')

[reed1, 2014-11-21 19:57:59]

I see 5% slowdown on nanobench --match bitmap_RGBA_8888_scale on 32bit android.
No slowdown at all on 64bit machines.

I think the slowdown is acceptable given that we need this fix, and we can
likely retweak the bitmap proc in the future.

lgtm

[mtklein, 2014-11-21 19:58:37]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-11-21 19:59:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/733163003/1

[commit-bot: I haz the power, 2014-11-21 20:10:36]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/179465150939c2f2420bfc15dc33825b1130e7f7