Android: Update gradle plugin version

Bug: None
Change-Id: Iee6681c94726531e6bcf54869155f04f59bdd299
Reviewed-on: https://chromium-review.googlesource.com/548855
Reviewed-by: Eric Stevenson <estevenson@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#482275}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 2fbcfb5397651fdf4f680cb1e37ca8e38bfd6bd9
diff --git a/android/gradle/root.jinja b/android/gradle/root.jinja
index 0d92ba5..ba418b4 100644
--- a/android/gradle/root.jinja
+++ b/android/gradle/root.jinja
@@ -8,6 +8,6 @@
         jcenter()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:2.3.2"
+        classpath "com.android.tools.build:gradle:2.3.3"
     }
 }