Add brotli content-encoding filter.

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index e4c9971a06483a498240fd0aa61f753ed4615045..2f9755dc218a8b62c04fc8bbea0d44050943a3e1 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -29869,24 +29869,6 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
-<histogram name="OfflinePages.DeletePage.TotalPageSizeAsPercentageOfFreeSpace"
-    units="%">
-  <owner>fgorski@chromium.org</owner>
-  <owner>jianli@chromium.org</owner>
-  <summary>
-    The percentage of space taken by offline pages from the free space that
-    could be available, if the feature was not present. I.e. considering
-    situation where the user has: Free Space, Offline content, other apps and
-    data. This is a percentage of: Offline content / (Offline content + Free
-    Space).
-
-    The value will be recorded after user deletes a single or multiple offline
-    pages. In case pages are removed in bulk, this value will be reported once.
-    This value is only reported with deleting, as we are trying to infer if lack
-    of free space might have caused the user to delete.
-  </summary>
-</histogram>
-
 <histogram name="OfflinePages.DeletePage.LastOpenToCreated" units="minutes">
   <owner>jianli@chromium.org</owner>
   <summary>
@@ -29907,6 +29889,24 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="OfflinePages.DeletePage.TotalPageSizeAsPercentageOfFreeSpace"
+    units="%">
+  <owner>fgorski@chromium.org</owner>
+  <owner>jianli@chromium.org</owner>
+  <summary>
+    The percentage of space taken by offline pages from the free space that
+    could be available, if the feature was not present. I.e. considering
+    situation where the user has: Free Space, Offline content, other apps and
+    data. This is a percentage of: Offline content / (Offline content + Free
+    Space).
+
+    The value will be recorded after user deletes a single or multiple offline
+    pages. In case pages are removed in bulk, this value will be reported once.
+    This value is only reported with deleting, as we are trying to infer if lack
+    of free space might have caused the user to delete.
+  </summary>
+</histogram>
+
 <histogram name="OfflinePages.DeletePageResult"
     enum="OfflinePagesDeletePageResult">
   <owner>jianli@chromium.org</owner>
@@ -66126,6 +66126,7 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="-1084055006" label="disable-web-notification-custom-layouts"/>
   <int value="-1078093206" label="ash-debug-shortcuts"/>
   <int value="-1077752943" label="enable-password-generation"/>
+  <int value="-1075156797" label="enable-brotli"/>
   <int value="-1075089382" label="enable-physical-web"/>
   <int value="-1062119671" label="enable-password-force-saving"/>
   <int value="-1056310158" label="disable-memory-pressure-chromeos"/>
@@ -66487,6 +66488,7 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="1862207743" label="enable-android-spellchecker"/>
   <int value="1865799183" label="javascript-harmony"/>
   <int value="1881036528" label="disable-multilingual-spellchecker"/>
+  <int value="1881174782" label="disable-brotli"/>
   <int value="1891210939" label="enable-blink-features"/>
   <int value="1892201400" label="enable-password-separated-signin-flow"/>
   <int value="1896456311" label="enable-password-save-in-page-navigation"/>