Change screenshots from default opt-in to default opt-out.

R=xiyuan@chromium.org
BUG=350484

Review URL: https://codereview.chromium.org/189833007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255719 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/feedback/html/default.html

@@ -48,7 +48,7 @@
     <div id="attach-file-note" i18n-content="attach-file-note"></div>
     <!-- Screenshot -->
     <div id="screenshot-container" class="checkbox-field-container">
-      <input id="screenshot-checkbox" type="checkbox" aria-labelledby="screenshot-label" checked>
+      <input id="screenshot-checkbox" type="checkbox" aria-labelledby="screenshot-label">
       <label id="screenshot-label" i18n-content="screenshot"></label>
       <img id="screenshot-image" alt="screenshot">
     </div>