DevTools: Add auto-generated descriptions to changes_strings.grdp

This patch fills in the 'desc' tag for each <message> in the
changes tab with auto-generated descriptions.

Regarding the quality of these descriptions. Our plan is to fix
descriptions that result in poor translations as reported by our
translation team and end users.

Follow-up patches will be made to add descriptions to other grdp files.

Bug: 941561
Change-Id: I838baac8eb55f79a53e0f1e251713bc5a7237da1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1678842Reviewed-by: Joel Einbinder <einbinder@chromium.org>
Commit-Queue: Mandy Chen <mandy.chen@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#672699}

third_party/blink/renderer/devtools/front_end/changes/changes_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <grit-part>
-  <message name="IDS_DEVTOOLS_025502db49a6cf61a8245998129bd973" desc="">
-    <ph name="DELETIONS">$1s</ph> deletions (-)
+  <message name="IDS_DEVTOOLS_025502db49a6cf61a8245998129bd973" desc="Deletion text in Changes View of the Changes tab">
+    <ph name="DELETIONS">$1s<ex>2</ex></ph> deletions (-)
   </message>
-  <message name="IDS_DEVTOOLS_5c2892cb638ec999fe22612587cd4a00" desc="">
+  <message name="IDS_DEVTOOLS_5c2892cb638ec999fe22612587cd4a00" desc="Text in Changes View of the Changes tab">
     No changes
   </message>
-  <message name="IDS_DEVTOOLS_70c85e43e99bc0cfcbb656123306eb19" desc="">
-    <ph name="INSERTIONS">$1s</ph> insertion (+),
+  <message name="IDS_DEVTOOLS_70c85e43e99bc0cfcbb656123306eb19" desc="Insertion text in Changes View of the Changes tab">
+    <ph name="INSERTIONS">$1s<ex>1</ex></ph> insertion (+),
   </message>
-  <message name="IDS_DEVTOOLS_af2c230293677261fe33ba6d3fbf02e3" desc="">
-    <ph name="INSERTIONS">$1s</ph> insertions (+),
+  <message name="IDS_DEVTOOLS_af2c230293677261fe33ba6d3fbf02e3" desc="Insertion text in Changes View of the Changes tab">
+    <ph name="INSERTIONS">$1s<ex>2</ex></ph> insertions (+),
   </message>
-  <message name="IDS_DEVTOOLS_c112bb3542e98308d12d5ecb10a67abc" desc="">
+  <message name="IDS_DEVTOOLS_c112bb3542e98308d12d5ecb10a67abc" desc="Title of the 'Changes' tool in the bottom drawer">
     Changes
   </message>
-  <message name="IDS_DEVTOOLS_c73e4e53c15d9971d9293fcff6c0d8c0" desc="">
-    ( … Skipping <ph name="LINES_LENGTH___PADDINGLINES____">$1d</ph> matching lines … )
+  <message name="IDS_DEVTOOLS_c73e4e53c15d9971d9293fcff6c0d8c0" desc="Text in Changes View of the Changes tab">
+    ( … Skipping <ph name="LINES_LENGTH___PADDINGLINES____">$1d<ex>2</ex></ph> matching lines … )
   </message>
-  <message name="IDS_DEVTOOLS_ca012662d53a8bde28b4d82722aaff7e" desc="">
+  <message name="IDS_DEVTOOLS_ca012662d53a8bde28b4d82722aaff7e" desc="The UI destination when right clicking an item that can be revealed">
     Changes drawer
   </message>
-  <message name="IDS_DEVTOOLS_df5f7764a0991b372d30c55eb57f6a55" desc="">
+  <message name="IDS_DEVTOOLS_df5f7764a0991b372d30c55eb57f6a55" desc="Tooltip text that appears when hovering over the largeicon undo button in the Changes View of the Changes tab">
     Revert all changes
   </message>
-  <message name="IDS_DEVTOOLS_e0e5ea9203300d2eb8ced39dd88c214e" desc="">
-    <ph name="DELETIONS">$1s</ph> deletion (-)
+  <message name="IDS_DEVTOOLS_e0e5ea9203300d2eb8ced39dd88c214e" desc="Deletion text in Changes View of the Changes tab">
+    <ph name="DELETIONS">$1s<ex>1</ex></ph> deletion (-)
   </message>
-  <message name="IDS_DEVTOOLS_f550ec70278cc72604795d91ff8dcd30" desc="">
+  <message name="IDS_DEVTOOLS_f550ec70278cc72604795d91ff8dcd30" desc="Text in Changes View of the Changes tab">
     Binary data
   </message>
-  <message name="IDS_DEVTOOLS_fa6711f918fe2018131a4ad0380b9e56" desc="">
-    <ph name="THIS_UISOURCECODE_DISPLAYNAME__">$1s</ph> (from source map)
+  <message name="IDS_DEVTOOLS_fa6711f918fe2018131a4ad0380b9e56" desc="Tooltip in Changes Sidebar of the Changes tab">
+    <ph name="THIS_UISOURCECODE_DISPLAYNAME__">$1s<ex>compile.html</ex></ph> (from source map)
   </message>
 </grit-part>
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