Roll ANGLE from f586ec98d924 to 938ee1e80fc8 (1 revision) (flutter/engine#43912)

f586ec98d9..938ee1e80f

2023-07-21 romanl@google.com Vulkan: legacy_dithering disallow reactivate when breaking RP

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

To file a bug in ANGLE: http://anglebug.com/new
To file a bug in Flutter Engine: https://github.com/flutter/flutter/issues/new

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

DEPS

@@ -635,7 +635,7 @@ deps = {
    Var('swiftshader_git') + '/SwiftShader.git' + '@' + '5f9ed9b16931c7155171d31f75004f73f0a3abc8',
 
    'src/third_party/angle':
-   Var('chromium_git') + '/angle/angle.git' + '@' + 'f586ec98d9245915b6e05789a2ebe33b368eae3b',
+   Var('chromium_git') + '/angle/angle.git' + '@' + '938ee1e80fc8c56a5c0915f2d4659e2729381c8c',
 
    'src/third_party/vulkan_memory_allocator':
    Var('chromium_git') + '/external/github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator' + '@' + '7de5cc00de50e71a3aab22dea52fbb7ff4efceb6',