Remove SkImageFilter::getInputResult(), since its return value is not

Remove SkImageFilter::getInputResult(), since its return value is not
style-compliant, and doesn't allow us to abort on failure.

R=reed@google.com

Committed: https://code.google.com/p/skia/source/detail?r=9245

Committed: https://code.google.com/p/skia/source/detail?r=9274

[Stephen White, 2013-05-21 21:40:19]

reed: PTAL. Thanks!

[reed1, 2013-05-21 21:55:06]

lgtm

[Stephen White, 2013-05-22 19:00:07]

Committed patchset #1 manually as r9245 (presubmit successful).

[robertphillips, 2013-05-22 23:58:47]

I reverted this in r9250 since Chrome relies on the getInputResult entry point.

Specifically
WebKit/Source/core/platform/graphics/filters/DropShadowImageFilter.cpp:65:26
calls it.

[Stephen White, 2013-05-23 00:55:02]

On 2013/05/22 23:58:47, robertphillips wrote:
> I reverted this in r9250 since Chrome relies on the getInputResult entry
point.
> 
> Specifically
> WebKit/Source/core/platform/graphics/filters/DropShadowImageFilter.cpp:65:26
> calls it.

Hmm.. I removed that entry point in Blink, and waited for the Blink roll. Was it
reverted?

[Stephen White, 2013-05-23 01:30:18]

On 2013/05/23 00:55:02, Stephen White wrote:
> On 2013/05/22 23:58:47, robertphillips wrote:
> > I reverted this in r9250 since Chrome relies on the getInputResult entry
> point.
> > 
> > Specifically
> > WebKit/Source/core/platform/graphics/filters/DropShadowImageFilter.cpp:65:26
> > calls it.
> 
> Hmm.. I removed that entry point in Blink, and waited for the Blink roll. Was
it
> reverted?

Apparently I can't count -- the Blink roll didn't include my change. Will wait
for the next roll before relanding.

Sorry for the trouble.

[Stephen White, 2013-05-24 15:16:12]

Committed patchset #1 manually as r9274 (presubmit successful).