Remove legacy StartsWithASCII function.

ui/gl/gl_version_info.cc

Index: ui/gl/gl_version_info.cc
diff --git a/ui/gl/gl_version_info.cc b/ui/gl/gl_version_info.cc
index 5eff43a1cc63439c22ea22d649b610c6e2313a97..c3cec4dc1d6f78c918f84a45c17ce79cb0911eeb 100644
--- a/ui/gl/gl_version_info.cc
+++ b/ui/gl/gl_version_info.cc
@@ -50,7 +50,8 @@ GLVersionInfo::GLVersionInfo(const char* version_str, const char* renderer_str)
                        &is_es, &is_es3);
   }
   if (renderer_str) {
-    is_angle = base::StartsWithASCII(renderer_str, "ANGLE", true);
+    is_angle = base::StartsWith(renderer_str, "ANGLE",
+                                base::CompareCase::SENSITIVE);
   }
 }