Always install when benchmarking split sample

Fix typo in comment

Change-Id: I31c16c20f27e9564bfbf2d7263436236424d6dcc
diff --git a/tools/build_sample_apk.py b/tools/build_sample_apk.py
index f0c74d9..b74356b 100755
--- a/tools/build_sample_apk.py
+++ b/tools/build_sample_apk.py
@@ -165,7 +165,7 @@
   command = ['adb']
   command.extend(args)
   utils.PrintCmd(command)
-  # On M adb install-multiple exits 0 but succeed in installing.
+  # On M adb install-multiple exits 1 but succeed in installing.
   if ignore_exit:
     subprocess.call(command)
   else:
@@ -293,7 +293,7 @@
     apks.append(split_apk_path)
 
   print('Generated apks available at: %s' % ' '.join(apks))
-  if options.install:
+  if options.install or options.benchmark:
     adb_install(apks)
   grand_total = 0
   if options.benchmark: