Update index.html

index.html

@@ -982,6 +982,63 @@ <h2><dfn>CaptureController</dfn></h2>
             <var>controller</var>, consists of running
             the following steps:
           </p>
+          <ol>
+            <li>
+              <p>
+                If <var>controller</var>.{{CaptureController/[[FocusDecisionFinalized]]}}
+                is <code>true</code>, abort these steps.
+              </p>
+            </li>
+            <li>
+              <p>
+                Set <var>controller</var>.{{CaptureController/[[FocusDecisionFinalized]]}}
+                to <code>true</code>.
+              </p>
+            </li>
+            <li>
+              <p>
+                If <var>controller</var>.{{CaptureController/[[FocusChangeDisabled]]}}
+                is <code>true</code>, abort these steps.
+              </p>
+            </li>
+            <li>
+              <p>
+                If too much time has elapsed since the [=capture-session=] started,
+                the user agent SHOULD set {{CaptureController/[[FocusDecisionFinalized]]}}
+                to <code>true</code>. The timespan is left up to the user agent,
+                but it is recommended that a value of one second be used.
+              </p>
+            </li>
+            <li>
+              <p>
+                If <var>controller</var>.{{CaptureController/[[DisplaySurfaceType]]}} is neither
+                {{DisplayCaptureSurfaceType/"browser"}} nor {{DisplayCaptureSurfaceType/"window"}},
+                abort these steps.
+              </p>
+            </li>
+            <li>
+              <p>
+                Run the following step  [=in parallel=]:
+              </p>
+              <ol>
+                <li>
+                  <p>
+                    If <var>controller</var>.{{CaptureController/[[FocusBehavior]]}}
+                    is {{CaptureStartFocusBehavior/"no-focus-change"}},
+                    focus the [=display surface=] representing the capturing document.
+                  </p>
+                </li>
+                <li>
+                  <p>
+                    If <var>controller</var>.{{CaptureController/[[FocusBehavior]]}}
+                    is {{CaptureStartFocusBehavior/"focus-captured-surface"}},
+                    focus the [=display surface=] referred to by
+                    <var>controller</var>.{{CaptureController/[[Source]]}}.
+                  </p>
+                </li>
+              </ol>
+            </li>
+          </ol>
         </section>
         <section>
           <h2><dfn>SelfCapturePreferenceEnum</dfn></h2>