title: DART_VM_OPTIONS=-DSILENT_OBSERVATORY=true
body: <p>I have installed today in Android Studio the plugins Flutter and Dart. Last versions.</p>
  <p>I was working for hours doing tests in my project and after the update suddenly I can't run the Flutter tests anymore, it keeps saying:</p>
  <pre class="lang-none prettyprint-override"><code>Warning: You should set `SILENT_OBSERVATORY` to true when debugging the VM as it will output the observatory URL by default.
  This breaks the various reporter contracts.
  To set the value define `DART_VM_OPTIONS=-DSILENT_OBSERVATORY=true`.
  </code></pre>
  <p>I'm using macOS last version with Flutter stable channel:</p>
  <pre class="lang-none prettyprint-override"><code>Flutter 1.17.4 • channel stable • https://github.com/flutter/flutter.git
  Framework • revision 1ad9baa8b9 (11 days ago) • 2020-06-17 14:41:16 -0700
  Engine • revision ee76268252
  Tools • Dart 2.8.4
  </code></pre>
  <p>I have tried to add the DART_VM_OPTIONS=-DSILENT_OBSERVATORY=true to the environment, export in a console and then start Android Studio with open -a... nothing works.</p>
  <p>Either Flutter is rewriting the var or the build-in dart-sdk not picking it.</p>
  <p>Since setting the variable as global don't work, nor in the terminal session before running Android Studio, nor Android Studio let you change anything in the dart plugin panel... I'm out of options</p>
  <p>If anybody knows how to fix this please help.</p>