Pass response's cache state to Resource Timing

And hand processResponseDone a response.

Resource Timing PR: w3c/resource-timing#266.

Closes #1201. Follow-up: #1215.

fetch.bs

@@ -1932,7 +1932,8 @@ message as HTTP/2 does not support them.
 <dfn export for=response id=concept-response-cache-state>cache state</dfn> (the empty string or
 "<code>local</code>"). Unlesss stated otherwise, it is the empty string.
 
-<p class=note>This is intended solely for usage by service workers. [[SW]]
+<p class=note>This is intended for usage by <cite>Service Workers</cite> and
+<cite>Resource Timing</cite>.  [[SW]] [[RESOURCE-TIMING]]
 <!-- If we ever expand the utility of this we need to carefully consider whether filtered responses
      need to mask it, whether the cache API needs to store it, etc. -->
 
@@ -3512,7 +3513,7 @@ representing the number of bytes transmitted. If given, <var>processRequestEndOf
 an algorithm accepting no arguments. If given, <var>processResponse</var> must be an algorithm
 accepting a <a for=/>response</a>. If given, <var>processResponseEndOfBody</var> must be an
 algorithm accepting a <a for=/>response</a> and null, failure, or a <a for=/>byte sequence</a>. If
-given, <var>processResponseDone</var> must be an algorithm accepting no arguments.
+given, <var>processResponseDone</var> must be an algorithm accepting a <a for=/>response</a>.
 
 <p>An ongoing <a for=/>fetch</a> can be
 <dfn export for=fetch id=concept-fetch-terminate>terminated</dfn> with flag <var>aborted</var>,
@@ -3986,9 +3987,9 @@ steps:
  <a for=request>done flag</a>.
 
  <li><p>If <var>fetchParams</var>'s <a for="fetch params">process response done</a> is not null,
- then <a>queue a fetch task</a> given <var>fetchParams</var>'s
- <a for="fetch params">process response done</a> and <var>fetchParams</var>'s
- <a for="fetch params">task destination</a>.
+ then <a>queue a fetch task</a> to run <var>fetchParams</var>'s
+ <a for="fetch params">process response done</a> given <var>response</var>,
+ with <var>fetchParams</var>'s <a for="fetch params">task destination</a>.
 </ol>
 
 <p>To <dfn export>finalize and report timing</dfn> given a <a for=/>response</a>
@@ -4003,13 +4004,21 @@ steps:
 
  <li><p>Let <var>timingInfo</var> be <var>response</var>'s <a for=response>timing info</a>.
 
+ <li><p>Let <var>cacheState</var> be <var>response</var>'s <a for=response>cache state</a>.
+
  <li><p>If <var>timingInfo</var> is null, then return.
 
- <li><p>If <var>response</var>'s <a for=response>timing allow passed flag</a> is not set, then set
- <var>timingInfo</var> to a new <a for=/>fetch timing info</a> whose
- <a for="fetch timing info">start time</a> and
- <a for="fetch timing info">post-redirect start time</a> are <var>timingInfo</var>'s
- <a for="fetch timing info">start time</a>.
+ <li>
+  <p>If <var>response</var>'s <a for=response>timing allow passed flag</a> is not set, then:
+
+  <ol>
+   <li><p>Set <var>timingInfo</var> to a new <a for=/>fetch timing info</a> whose
+   <a for="fetch timing info">start time</a> and
+   <a for="fetch timing info">post-redirect start time</a> are <var>timingInfo</var>'s
+   <a for="fetch timing info">start time</a>.
+
+   <li><p>Set <var>cacheState</var> to the empty string.
+  </ol>
 
  <li><p>Set <var>timingInfo</var>'s <a for="fetch timing info">end time</a> to the
  <a for=/>coarsened shared current time</a> given <var>global</var>'s
@@ -4018,9 +4027,8 @@ steps:
 
  <li><p>Set <var>response</var>'s <a for="response">timing info</a> to <var>timingInfo</var>.
 
- <li><p><a href="https://github.com/w3c/resource-timing/pull/261">Mark resource timing</a> for
- <var>timingInfo</var>, <var>originalURL</var>, <var>initiatorType</var>, and <var>global</var>.
- <!-- TODO -->
+ <li><p><a for=/>Mark resource timing</a> for <var>timingInfo</var>, <var>originalURL</var>,
+ <var>initiatorType</var>, <var>global</var>, and <var>cacheState</var>.
 </ol>
 
 
@@ -7269,8 +7277,9 @@ method steps are:
    <li><p><a lt=terminated for=fetch>Terminate</a> the ongoing fetch with the aborted flag set.
   </ol>
 
- <li><p>Let <var>handleFetchDone</var> be to <a>finalize and report timing</a> with
- <var>response</var>, <var>globalObject</var>, and "<code>fetch</code>".
+ <li><p>Let <var>handleFetchDone</var> given <a for=/>response</a> <var>response</var> be to
+ <a>finalize and report timing</a> with <var>response</var>, <var>globalObject</var>, and
+ "<code>fetch</code>".
 
  <li>
   <p><a for=/>Fetch</a> <var>request</var> with <a for=fetch><i>processResponseDone</i></a> set to