Do not clear canvas with transparent color after creating SkSurface

Do not clear canvas with transparent color after creating SkSurface

Recently SkSurface::MakeRaster changed its implementation to zero its
malloced space. So after creating the SkSurface, there is no need to
call sksurface's canvas->clear(SK_ColorTRANSPARENT). This CL removes
that step.

Committed: https://crrev.com/51c4765d8e7934359e8f5793ad444c02e45a4d28
Cr-Commit-Position: refs/heads/master@{#403907}

[xidachen, 2016-06-30 20:11:07]

xidachen@chromium.org changed reviewers:
+ jbroman@chromium.org

[xidachen, 2016-06-30 20:11:07]

PTAL

[f(malita), 2016-07-01 12:59:30]

fmalita@chromium.org changed reviewers:
+ fmalita@chromium.org

[f(malita), 2016-07-01 12:59:31]

LGTM, but I'd like to get Skia to commit to surface initialization officially. 
If you don't mind, let's wait a bit while the semantics are clarified
(https://codereview.chromium.org/2066903003/).

[xidachen, 2016-07-06 13:33:04]

The CQ bit was checked by xidachen@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-07-06 13:33:16]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[f(malita), 2016-07-06 14:03:16]

On 2016/07/01 12:59:31, f(malita) wrote:
> LGTM, but I'd like to get Skia to commit to surface initialization officially.

> If you don't mind, let's wait a bit while the semantics are clarified
> (https://codereview.chromium.org/2066903003/).

The Skia doc change is in, feel free to land.  Thanks!

[xidachen, 2016-07-06 14:03:49]

The CQ bit was unchecked by xidachen@chromium.org

[xidachen, 2016-07-06 14:04:24]

xidachen@chromium.org changed reviewers:
+ junov@chromium.org

[xidachen, 2016-07-06 14:04:25]

Thanks, Florin.

junov@: FYI.

[xidachen, 2016-07-06 14:04:34]

The CQ bit was checked by xidachen@chromium.org

[commit-bot: I haz the power, 2016-07-06 14:04:50]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-06 14:50:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-06 14:51:31]

Description was changed from

==========
Do not clear canvas with transparent color after creating SkSurface

Recently SkSurface::MakeRaster changed its implementation to zero its
malloced space. So after creating the SkSurface, there is no need to
call sksurface's canvas->clear(SK_ColorTRANSPARENT). This CL removes
that step.
==========

to

==========
Do not clear canvas with transparent color after creating SkSurface

Recently SkSurface::MakeRaster changed its implementation to zero its
malloced space. So after creating the SkSurface, there is no need to
call sksurface's canvas->clear(SK_ColorTRANSPARENT). This CL removes
that step.

Committed: https://crrev.com/51c4765d8e7934359e8f5793ad444c02e45a4d28
Cr-Commit-Position: refs/heads/master@{#403907}
==========

[commit-bot: I haz the power, 2016-07-06 14:51:32]

Patchset 1 (id:??) landed as
https://crrev.com/51c4765d8e7934359e8f5793ad444c02e45a4d28
Cr-Commit-Position: refs/heads/master@{#403907}