Update to Chromium 80.0.3987.53

chromium_version.txt

@@ -1 +1 @@
-80.0.3987.42
+80.0.3987.53

patches/core/ungoogled-chromium/remove-unused-preferences-fields.patch

@@ -4113,7 +4113,7 @@
  #include "components/sync_preferences/testing_pref_service_syncable.h"
 --- a/tools/metrics/histograms/enums.xml
 +++ b/tools/metrics/histograms/enums.xml
-@@ -62680,7 +62680,6 @@ Full version information for the fingerp
+@@ -62682,7 +62682,6 @@ Full version information for the fingerp
    <int value="3" label="kRestoreOnStartup"/>
    <int value="4" label="kURLsToRestoreOnStartup"/>
    <int value="5" label="extensions::pref_names::kExtensions"/>
@@ -4121,7 +4121,7 @@
    <int value="7" label="kSearchProviderOverrides"/>
    <int value="8" label="kDefaultSearchProviderSearchURL (Obsolete 12/2016)"/>
    <int value="9" label="kDefaultSearchProviderKeyword (Obsolete 12/2016)"/>
-@@ -62695,10 +62694,7 @@ Full version information for the fingerp
+@@ -62697,10 +62696,7 @@ Full version information for the fingerp
    <int value="18" label="kSafeBrowsingIncidentsSent"/>
    <int value="19" label="kSwReporterPromptVersion"/>
    <int value="20" label="kSwReporterPromptReason"/>