Build for 212.5712 (#5894)

Author: stevemessick

docs/testing.md

@@ -186,9 +186,9 @@ directory once and put it outside the app another time.
 
 ### Create an Android app
 
-Start Android Studio and use the File > New > New Project menu to fire 
-up the new project wizard. Choose the template that includes a Basic
-Activity. One the next page, use Kotlin and minimum API level 16.
+Start Android Studio and use the File > New > New Project menu to open 
+the new project wizard. Choose the template that includes a Basic
+Activity. On the next page, use Kotlin and minimum API level 16.
 Let the system stabilize (Gradle sync).
 
 Switch the Project view to

product-matrix.json

@@ -34,7 +34,7 @@
       "baseVersion": "212.5284.40",
       "dartPluginVersion": "212.5486",
       "sinceBuild": "212.5284.40",
-      "untilBuild": "212.5457.46"
+      "untilBuild": "212.5712.43"
     },
     {
       "channel": "stable",