Revert of Revert of Revert of Add gamma/sRGB tag to SkImageInfo

Revert of Revert of Revert of Add gamma/sRGB tag to SkImageInfo (patchset #1 id:1 of https://codereview.chromium.org/532583002/)

Reason for revert:
linux_blink_rel

[ RUN      ] DeferredImageDecoderTest.drawIntoSkPicture
../../third_party/WebKit/Source/platform/graphics/DeferredImageDecoderTest.cpp:172: Failure
Value of: canvasBitmap.getColor(0, 0)
Actual: 0
Expected: static_cast<SkColor>( (static_cast<U8CPU>(255) << 24) | (static_cast<U8CPU>(255) << 16) | (static_cast<U8CPU>(255) << 8) | (static_cast<U8CPU>(255) << 0))
Which is: 4294967295
[  FAILED  ] DeferredImageDecoderTest.drawIntoSkPicture (0 ms)
[1457/1458] DeferredImageDecoderTest.drawIntoSkPicture (0 ms)
[ RUN      ] DeferredImageDecoderTest.decodeOnOtherThread
../../third_party/WebKit/Source/platform/graphics/DeferredImageDecoderTest.cpp:233: Failure
Value of: canvasBitmap.getColor(0, 0)
Actual: 0
Expected: static_cast<SkColor>( (static_cast<U8CPU>(255) << 24) | (static_cast<U8CPU>(255) << 16) | (static_cast<U8CPU>(255) << 8) | (static_cast<U8CPU>(255) << 0))
Which is: 4294967295
[  FAILED  ] DeferredImageDecoderTest.decodeOnOtherThread (1 ms)
[1458/1458] DeferredImageDecoderTest.decodeOnOtherThread (1 ms)
Retrying 2 tests (retry #2)


Original issue's description:
> Revert of Revert of Add gamma/sRGB tag to SkImageInfo (patchset #1 id:1 of https://codereview.chromium.org/525113005/)
> 
> Reason for revert:
> Experiment to see resulting failures
> 
> Original issue's description:
> > Revert of Add gamma/sRGB tag to SkImageInfo (patchset #1 id:1 of https://codereview.chromium.org/522813002/)
> > 
> > Reason for revert:
> > seems to be breaking layout tests in roll
> > 
> > Original issue's description:
> > > Add gamma/sRGB tag to SkImageInfo
> > > 
> > > This reverts commit 64ba5fa1ff428858f803523257cd862f8b33423b.
> > > 
> > > BUG=skia:
> > > 
> > > Committed: https://skia.googlesource.com/skia/+/c89aa509d6a094bc1b18d73135343819903a9cfb
> > 
> > TBR=reed@google.com
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=skia:
> > 
> > Committed: https://skia.googlesource.com/skia/+/b44c1895afae516cb851cd1a0cea83343c354ee4
> 
> TBR=reed@google.com
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
> 
> Committed: https://skia.googlesource.com/skia/+/4581828014eb3d015e6ed55c9a5b6932b8751818

TBR=reed@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/1cbc68f9659f15206d920dacd434ddf4b658ad1f

[reed2, 2014-09-02 11:13:58]

Created Revert of Revert of Revert of Add gamma/sRGB tag to SkImageInfo

[commit-bot: I haz the power, 2014-09-02 11:14:30]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/reed@chromium.org/524593005/1

[commit-bot: I haz the power, 2014-09-02 11:14:41]

Committed patchset #1 (id:1) as 1cbc68f9659f15206d920dacd434ddf4b658ad1f