Remove obsolete patching step from runtime callstats.html

BUG=
R=cbruni@chromium.org

Review-Url: https://codereview.chromium.org/2119823002
Cr-Commit-Position: refs/heads/master@{#37534}

tools/callstats.html

@@ -1744,7 +1744,10 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
     <h2>Usage</h2>
     <ol>
       <li>Install scipy, e.g. <code>sudo aptitude install python-scipy</code>
-      <li>Build chrome with the <a href="https://codereview.chromium.org/1923893002">extended runtime callstats</a>.</li>
+      <li>Build chrome.</li>
+      <li>Check out a known working version of webpagereply:
+        <pre>git -C $CHROME_DIR/third_party/webpagereplay checkout 7dbd94752d1cde5536ffc623a9e10a51721eff1d</pre>
+      </li>
       <li>Run <code>callstats.py</code> with a web-page-replay archive:
         <pre>$V8_DIR/tools/callstats.py run \
         --replay-bin=$CHROME_SRC/third_party/webpagereplay/replay.py \

tools/callstats.py

@@ -3,7 +3,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 '''
-Usage: runtime-call-stats.py [-h] <command> ...
+Usage: callstats.py [-h] <command> ...
 
 Optional arguments:
   -h, --help  show this help message and exit