Add cibuild for arm64

script/cibuild

@@ -28,7 +28,8 @@ def main():
   elif sys.platform == 'linux2':
     return (run_ci(['-t', 'x64']) or
             run_ci(['-t', 'ia32']) or
-            run_ci(['-t', 'arm']))
+            run_ci(['-t', 'arm']) or
+            run_ci(['-t', 'arm64']))
   else:
     return run_ci([])
 

script/cibuild-libchromiumcontent-linux-arm64

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+export TARGET_ARCH=arm64
+
+script/cibuild-libchromiumcontent-linux