Bump default_lint_android_sdk_version to 24 to match sdk

BUG=623989

Review-Url: https://codereview.chromium.org/2498503003
Cr-Original-Commit-Position: refs/heads/master@{#432036}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: a410e098e9497a90722b14604fab8e8fbf79c0b3

config/android/config.gni

@@ -43,7 +43,7 @@ if (is_android) {
     # Purposefully repeated so that downstream can change
     # default_android_sdk_root without changing lint version.
     default_lint_android_sdk_root = "//third_party/android_tools/sdk"
-    default_lint_android_sdk_version = "23"
+    default_lint_android_sdk_version = "24"
   }
 
   if (!defined(default_extras_android_sdk_root)) {