Remove references to browsing context

index.html

@@ -1168,9 +1168,8 @@ <h3>
           <dd>
             <p>
               This attribute must return the type of the last non-redirect
-              <a data-cite="HTML/browsing-the-web.html#navigate">navigation</a>
-              in the current browsing context. It must have one of the
-              following <a data-lt=
+              <a data-cite="HTML/browsing-the-web.html#navigate">navigation</a>.
+              It must have one of the following <a data-lt=
               "PerformanceNavigationTiming.type">navigation type</a> values.
             </p>
             <p class="note">
@@ -1190,9 +1189,9 @@ <h3>
           <dd>
             <p>
               This attribute must return the number of redirects since the last
-              non-redirect navigation under the current browsing context. If
-              there is no redirect or there is any redirect that is not from
-              the <a data-cite="html#same-origin">same origin</a> as the
+              non-redirect navigation. If there is no redirect or there is any
+              redirect that is not from the
+              <a data-cite="html#same-origin">same origin</a> as the
               destination document, this attribute must return zero.
             </p>
           </dd>
@@ -1228,8 +1227,8 @@ <h3>
           <dd>
             <p>
               The <code>timing</code> attribute represents the timing
-              information related to the browsing contexts since the last
-              non-redirect navigation. This attribute is defined by the
+              information since the last non-redirect navigation.
+              This attribute is defined by the
               <code>PerformanceTiming</code> interface.
             </p>
           </dd>