move ObserverInit/ObserverEntryList under observe()

Logically, these concepts are used under observe, and this helps cleanup
and clarify the interface definition in the nav.

Please enter the commit message for your changes. Lines starting

index.html

@@ -359,6 +359,62 @@ <h2><dfn>observe()</dfn> method</h2>
             </ol>
           </li>
         </ol>
+        <section data-dfn-for="PerformanceObserverInit" data-link-for=
+      "PerformanceObserverInit">
+          <h2><dfn>PerformanceObserverInit</dfn> dictionary</h2>
+          <pre class="idl">
+          dictionary PerformanceObserverInit {
+            required sequence&lt;DOMString&gt; entryTypes;
+            boolean buffered = false;
+          };
+          </pre>
+          <dl>
+            <dt><dfn>entryTypes</dfn></dt>
+            <dd>A list of entry types to be observed. The list MUST NOT be empty
+            and types not recognized by the user agent MUST be ignored.</dd>
+          </dl>
+          <dl>
+            <dt><dfn>buffered</dfn></dt>
+            <dd>A flag to indicate whether buffered entries should be queued into
+            observer's buffer.</dd>
+          </dl>
+        </section>
+        <section data-dfn-for="PerformanceObserverEntryList" data-link-for=
+        "PerformanceObserverEntryList">
+          <h2><dfn>PerformanceObserverEntryList</dfn> interface</h2>
+          <pre class="idl">
+          [Exposed=(Window,Worker)]
+          interface PerformanceObserverEntryList {
+            PerformanceEntryList getEntries();
+            PerformanceEntryList getEntriesByType (DOMString type);
+            PerformanceEntryList getEntriesByName (DOMString name, optional DOMString type);
+          };
+          </pre>
+          <section>
+            <h2><dfn>getEntries()</dfn> method</h2>
+            <p>Returns a <a>PerformanceEntryList</a> object returned by
+            <a href="#filter-buffer-by-name-and-type"></a> algorithm with
+            <var>buffer</var> set to <a>observer buffer</a>, and
+            <var>name</var> and <var>type</var> set to `null`.</p>
+          </section>
+          <section>
+            <h2><dfn>getEntriesByType()</dfn> method</h2>
+            <p>Returns a <a>PerformanceEntryList</a> object returned by
+            <a href="#filter-buffer-by-name-and-type"></a> algorithm with
+            <var>buffer</var> set to <a>observer buffer</a>,
+            <var>name</var> set to `null`, and <var>type</var> set
+            to `type`.</p>
+          </section>
+          <section>
+            <h2><dfn>getEntriesByName()</dfn> method</h2>
+            <p>Returns a <a>PerformanceEntryList</a> object returned by
+            <a href="#filter-buffer-by-name-and-type"></a> algorithm with
+            <var>buffer</var> set to <a>observer buffer</a>,
+            <var>name</var> set to `name`, and <var>type</var> set
+            to `null` if optional `entryType` is omitted, and <var>type</var> set
+            to `type` otherwise.</p>
+          </section>
+        </section>
       </section>
       <section>
         <h2><dfn>disconnect()</dfn> method</h2>
@@ -367,62 +423,6 @@ <h2><dfn>disconnect()</dfn> method</h2>
         <a>relevant global object</a>, and also empty <a>context object</a>'s
         <a>observer buffer</a>.</p>
       </section>
-      <section data-dfn-for="PerformanceObserverInit" data-link-for=
-      "PerformanceObserverInit">
-        <h2><dfn>PerformanceObserverInit</dfn> dictionary</h2>
-        <pre class="idl">
-        dictionary PerformanceObserverInit {
-          required sequence&lt;DOMString&gt; entryTypes;
-          boolean buffered = false;
-        };
-        </pre>
-        <dl>
-          <dt><dfn>entryTypes</dfn></dt>
-          <dd>A list of entry types to be observed. The list MUST NOT be empty
-          and types not recognized by the user agent MUST be ignored.</dd>
-        </dl>
-        <dl>
-          <dt><dfn>buffered</dfn></dt>
-          <dd>A flag to indicate whether buffered entries should be queued into
-          observer's buffer.</dd>
-        </dl>
-      </section>
-      <section data-dfn-for="PerformanceObserverEntryList" data-link-for=
-      "PerformanceObserverEntryList">
-        <h2><dfn>PerformanceObserverEntryList</dfn> interface</h2>
-        <pre class="idl">
-        [Exposed=(Window,Worker)]
-        interface PerformanceObserverEntryList {
-          PerformanceEntryList getEntries();
-          PerformanceEntryList getEntriesByType (DOMString type);
-          PerformanceEntryList getEntriesByName (DOMString name, optional DOMString type);
-        };
-        </pre>
-        <section>
-          <h2><dfn>getEntries()</dfn> method</h2>
-          <p>Returns a <a>PerformanceEntryList</a> object returned by
-          <a href="#filter-buffer-by-name-and-type"></a> algorithm with
-          <var>buffer</var> set to <a>observer buffer</a>, and
-          <var>name</var> and <var>type</var> set to `null`.</p>
-        </section>
-        <section>
-          <h2><dfn>getEntriesByType()</dfn> method</h2>
-          <p>Returns a <a>PerformanceEntryList</a> object returned by
-          <a href="#filter-buffer-by-name-and-type"></a> algorithm with
-          <var>buffer</var> set to <a>observer buffer</a>,
-          <var>name</var> set to `null`, and <var>type</var> set
-          to `type`.</p>
-        </section>
-        <section>
-          <h2><dfn>getEntriesByName()</dfn> method</h2>
-          <p>Returns a <a>PerformanceEntryList</a> object returned by
-          <a href="#filter-buffer-by-name-and-type"></a> algorithm with
-          <var>buffer</var> set to <a>observer buffer</a>,
-          <var>name</var> set to `name`, and <var>type</var> set
-          to `null` if optional `entryType` is omitted, and <var>type</var> set
-          to `type` otherwise.</p>
-        </section>
-      </section>
     </section>
   </section>
   <section>