Revert "Upgrade to clang-r522817"

This reverts commit dccbef36a4f84a5799a8136c98a7b933dd598d14.

Reason for revert: Potential culprit for b/335755564

Change-Id: I3fd02f2b08ad94a4e022cbebcd96afc2fab2e1d8
diff --git a/cc/config/global.go b/cc/config/global.go
index ffd6d7e..16b5e09 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -295,9 +295,6 @@
 		// New warnings to be fixed after clang-r475365
 		"-Wno-error=single-bit-bitfield-constant-conversion", // http://b/243965903
 		"-Wno-error=enum-constexpr-conversion",               // http://b/243964282
-		// New warnings to be fixed after clang-r522817
-		"-Wno-error=invalid-offsetof",
-		"-Wno-error=thread-safety-reference-return",
 
 		// Irrelevant on Android because _we_ don't use exceptions, but causes
 		// lots of build noise because libcxx/libcxxabi do. This can probably
@@ -305,9 +302,6 @@
 		// until then because it causes warnings in the _callers_, not the
 		// project itself.
 		"-Wno-deprecated-dynamic-exception-spec",
-
-		// Allow using VLA CXX extension.
-		"-Wno-vla-cxx-extension",
 	}
 
 	noOverride64GlobalCflags = []string{}
@@ -392,7 +386,7 @@
 
 	// prebuilts/clang default settings.
 	ClangDefaultBase         = "prebuilts/clang/host"
-	ClangDefaultVersion      = "clang-r522817"
+	ClangDefaultVersion      = "clang-r510928"
 	ClangDefaultShortVersion = "18"
 
 	// Directories with warnings from Android.bp files.