Use response body info instead of timing info for body sizes (#321)

* Use `resource info` instead of `timing info` for body sizes

Those numbers are per-response and not per-fetch, so they need to be
treated separately.

* Rename to resource body info

* Rename to resource body info

* Adjust to fetch rename

* Fix typo

index.html

@@ -404,6 +404,11 @@ <h3>
           info=] <a data-dfn-for="PerformanceResourceTiming"><dfn>timing
           info</dfn></a>.
         </p>
+        <p>
+          A <a>PerformanceResourceTiming</a> has an associated [=response body
+          info=] <a data-dfn-for="PerformanceResourceTiming"><dfn>resource
+          info</dfn></a>.
+        </p>
         <p>
           The <a>PerformanceResourceTiming</a> interface participates in the
           <a data-cite=
@@ -653,13 +658,13 @@ <h3>
         </p>
         <p data-dfn-for="PerformanceResourceTiming">
           The <dfn>encodedBodySize</dfn> getter steps are to return
-          <a>this</a>'s <a data-for="PerformanceResourceTiming">timing
-          info</a>'s [=fetch timing info/encoded body size=].
+          <a>this</a>'s <a data-for="PerformanceResourceTiming">resource
+          info</a>'s [=response body info/encoded size=].
         </p>
         <p data-dfn-for="PerformanceResourceTiming">
           The <dfn>decodedBodySize</dfn> getter steps are to return
-          <a>this</a>'s <a data-for="PerformanceResourceTiming">timing
-          info</a>'s [=fetch timing info/decoded body size=].
+          <a>this</a>'s <a data-for="PerformanceResourceTiming">resource
+          info</a>'s [=response body info/decoded size=].
         </p>
         <p data-dfn-for="PerformanceResourceTiming">
           The <dfn>transferSize</dfn> getter steps are to perform the following
@@ -681,8 +686,8 @@ <h3>
           <li>
             <p>
               Return <a>this</a>'s <a data-for=
-              "PerformanceResourceTiming">timing info</a>'s [=fetch timing
-              info/encoded body size=] plus 300.
+              "PerformanceResourceTiming">response body info</a>'s [=response body
+              info/encoded size=] plus 300.
             </p>
             <p class='note'>
               The constant number added to `transferSize` replaces exposing the
@@ -1056,16 +1061,16 @@ <h2>
         <p>
           To <dfn data-export="">mark resource timing</dfn> given a [=/fetch
           timing info=] |timingInfo|, a DOMString |requestedURL|, a DOMString
-          |initiatorType| a <a>global object</a> |global|, and a string
-          |cacheMode|, perform the following steps:
+          |initiatorType| a <a>global object</a> |global|, a string
+          |cacheMode|, and a [=/response body info=] |bodyInfo|, perform the following steps:
         </p>
         <ol>
           <li>Create a <a>PerformanceResourceTiming</a> object |entry| in
           |global|'s [=global object/realm=].
           </li>
           <li>
             <a>Setup the resource timing entry</a> for |entry|, given
-            |initiatorType|, |requestedURL|, |timingInfo|, and |cacheMode|.
+            |initiatorType|, |requestedURL|, |timingInfo|, |cacheMode|, and |bodyInfo|.
           </li>
           <li>
             <a data-cite=
@@ -1082,8 +1087,8 @@ <h2>
           To <dfn data-export="">setup the resource timing entry</dfn> for
           <a>PerformanceResourceTiming</a> |entry| given DOMString
           |initiatorType|, DOMString |requestedURL|, [=/fetch timing info=]
-          |timingInfo|, and a DOMString |cacheMode|, perform the following
-          steps:
+          |timingInfo|, a DOMString |cacheMode|, and a [=response body info=] |bodyInfo|,
+          perform the following steps:
         </p>
         <ol>
           <li>Assert that |cacheMode| is the empty string or
@@ -1097,6 +1102,8 @@ <h2>
           </li>
           <li>Set |entry|'s <a data-for="PerformanceResourceTiming">timing
           info</a> to |timingInfo|.
+          <li>Set |entry|'s <a data-for="PerformanceResourceTiming">response body info</a>
+          to |bodyInfo|.
           </li>
           <li>Set |entry|'s <a data-for="PerformanceResourceTiming">cache
           mode</a> to |cacheMode|.