Roll SwiftShader from 16da29a6b185 to 6517262b2386 (2 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/16da29a6b185..6517262b2386

2022-08-25 capn@google.com Clarify negativeOneToOne depth clipping comments
2022-08-24 syoussefi@google.com Implement VK_EXT_depth_clip_control

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-dawn-autoroll
Please CC rharrison@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in SwiftShader: https://bugs.chromium.org/p/swiftshader/issues/entry
To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: rharrison@google.com
Change-Id: I576be4d99aaab32affcd497d0fb0950865377c14
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100380
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -134,7 +134,7 @@ deps = {
   },
 
   'third_party/swiftshader': {
-    'url': '{swiftshader_git}/SwiftShader@16da29a6b1854f5378e65eabf86d010e00149aa5',
+    'url': '{swiftshader_git}/SwiftShader@6517262b2386152d09411a3ae8d5494ba89d7526',
     'condition': 'dawn_standalone',
   },