Remove clang indirection, affects command line ordering

Move the last clang-specific list into the common global list.  This
affects the command line flag ordering due to the the -fdebug-prefix-map=
flag that is added by an init() function, which will force every native
rule to recompile.

Bug: 68947919
Test: m checkbuild
Change-Id: Ic2509e61e9555e9483b92a18d7e8d9913b7125cc

cc/config/clang.go

@@ -92,64 +92,6 @@ var ClangTidyDisableChecks = []string{
 	"readability-function-cognitive-complexity", // http://b/175055536
 }
 
-func init() {
-	exportStringListStaticVariable("ClangExtraCflags", []string{
-		"-D__compiler_offsetof=__builtin_offsetof",
-
-		// Emit address-significance table which allows linker to perform safe ICF. Clang does
-		// not emit the table by default on Android since NDK still uses GNU binutils.
-		"-faddrsig",
-
-		// Turn on -fcommon explicitly, since Clang now defaults to -fno-common. The cleanup bug
-		// tracking this is http://b/151457797.
-		"-fcommon",
-
-		// Help catch common 32/64-bit errors.
-		"-Werror=int-conversion",
-
-		// Enable the new pass manager.
-		"-fexperimental-new-pass-manager",
-
-		// Disable overly aggressive warning for macros defined with a leading underscore
-		// This happens in AndroidConfig.h, which is included nearly everywhere.
-		// TODO: can we remove this now?
-		"-Wno-reserved-id-macro",
-
-		// Workaround for ccache with clang.
-		// See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
-		"-Wno-unused-command-line-argument",
-
-		// Force clang to always output color diagnostics. Ninja will strip the ANSI
-		// color codes if it is not running in a terminal.
-		"-fcolor-diagnostics",
-
-		// Warnings from clang-7.0
-		"-Wno-sign-compare",
-
-		// Warnings from clang-8.0
-		"-Wno-defaulted-function-deleted",
-
-		// Disable -Winconsistent-missing-override until we can clean up the existing
-		// codebase for it.
-		"-Wno-inconsistent-missing-override",
-
-		// Warnings from clang-10
-		// Nested and array designated initialization is nice to have.
-		"-Wno-c99-designator",
-
-		// Warnings from clang-12
-		"-Wno-gnu-folding-constant",
-
-		// Calls to the APIs that are newer than the min sdk version of the caller should be
-		// guarded with __builtin_available.
-		"-Wunguarded-availability",
-		// This macro allows the bionic versioning.h to indirectly determine whether the
-		// option -Wunguarded-availability is on or not.
-		"-D__ANDROID_UNAVAILABLE_SYMBOLS_ARE_WEAK__",
-	})
-
-}
-
 func ClangFilterUnknownCflags(cflags []string) []string {
 	result, _ := android.FilterList(cflags, ClangUnknownCflags)
 	return result