Remove senorblanco@ from OWNERS

Add shrekshao@ and geofflang@ as OWNERS of the OpenGL Backend.

Change-Id: I21228b0c507980b153124124a1b0d9492716a712
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/341315
Reviewed-by: Stephen White <senorblanco@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Shrek Shao <shrekshao@google.com>

src/dawn/native/opengl/OWNERS

diff --git a/src/dawn/native/opengl/OWNERS b/src/dawn/native/opengl/OWNERS
index d6d6510..5f87082 100644
--- a/src/dawn/native/opengl/OWNERS
+++ b/src/dawn/native/opengl/OWNERS
@@ -1 +1,2 @@
-senorblanco@chromium.org
+shrekshao@google.com
+geofflang@chromium.org

third_party/gn/webgpu-cts/OWNERS

diff --git a/third_party/gn/webgpu-cts/OWNERS b/third_party/gn/webgpu-cts/OWNERS
index b090634..d2e4a43 100644
--- a/third_party/gn/webgpu-cts/OWNERS
+++ b/third_party/gn/webgpu-cts/OWNERS
@@ -17,5 +17,4 @@
 kainino@chromium.org
 lokokung@google.com
 rharrison@chromium.org
-senorblanco@google.com
 shrekshao@google.com