gl_angle_ext.xml: treat glProvokingVertexANGLE as alias

This allows an OpenGL loader to alias glProvokingVertex and
glProvokingVertexANGLE function pointers. In my case, it helps with
the GLAD loader when using the --alias option.

Bug: angleproject:7193
Change-Id: Id7e6318a5ee1f1b172f0499fc01dd080442471b6
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3582519
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

scripts/code_generation_hashes/Extension_files.json

@@ -24,7 +24,7 @@
   "scripts/gl.xml":
     "4ea42a5934348eab4d30c0e92e00c90d",
   "scripts/gl_angle_ext.xml":
-    "d55b3ef6eb8705f5841e4c5df563675f",
+    "37eebedc1153cd9d208efa469a10a7b2",
   "scripts/registry_xml.py":
     "a04c10c331ddff73d0ff9a56489be129",
   "scripts/wgl.xml":

scripts/code_generation_hashes/GL_EGL_WGL_loader.json

@@ -10,7 +10,7 @@
   "scripts/gl.xml":
     "4ea42a5934348eab4d30c0e92e00c90d",
   "scripts/gl_angle_ext.xml":
-    "d55b3ef6eb8705f5841e4c5df563675f",
+    "37eebedc1153cd9d208efa469a10a7b2",
   "scripts/registry_xml.py":
     "a04c10c331ddff73d0ff9a56489be129",
   "scripts/wgl.xml":

scripts/code_generation_hashes/GL_EGL_entry_points.json

@@ -14,7 +14,7 @@
   "scripts/gl.xml":
     "4ea42a5934348eab4d30c0e92e00c90d",
   "scripts/gl_angle_ext.xml":
-    "d55b3ef6eb8705f5841e4c5df563675f",
+    "37eebedc1153cd9d208efa469a10a7b2",
   "scripts/registry_xml.py":
     "a04c10c331ddff73d0ff9a56489be129",
   "scripts/wgl.xml":

scripts/code_generation_hashes/GLenum_value_to_string_map.json

@@ -4,7 +4,7 @@
   "scripts/gl.xml":
     "4ea42a5934348eab4d30c0e92e00c90d",
   "scripts/gl_angle_ext.xml":
-    "d55b3ef6eb8705f5841e4c5df563675f",
+    "37eebedc1153cd9d208efa469a10a7b2",
   "scripts/registry_xml.py":
     "a04c10c331ddff73d0ff9a56489be129",
   "src/libANGLE/capture/gl_enum_utils_autogen.cpp":

scripts/code_generation_hashes/proc_table.json

@@ -10,7 +10,7 @@
   "scripts/gl.xml":
     "4ea42a5934348eab4d30c0e92e00c90d",
   "scripts/gl_angle_ext.xml":
-    "d55b3ef6eb8705f5841e4c5df563675f",
+    "37eebedc1153cd9d208efa469a10a7b2",
   "scripts/registry_xml.py":
     "a04c10c331ddff73d0ff9a56489be129",
   "scripts/wgl.xml":

scripts/gl_angle_ext.xml

@@ -811,6 +811,7 @@
         <command>
             <proto>void <name>glProvokingVertexANGLE</name></proto>
             <param group="VertexProvokingMode"><ptype>GLenum</ptype> <name>mode</name></param>
+            <alias name="glProvokingVertex"/>
         </command>
         <command>
             <proto>void <name>glLoseContextCHROMIUM</name></proto>