chore: remove disable_unload_metrics.patch (#47059)

patches/chromium/.patches

@@ -57,7 +57,6 @@ export_gin_v8platform_pageallocator_for_usage_outside_of_the_gin.patch
 fix_export_zlib_symbols.patch
 web_contents.patch
 webview_fullscreen.patch
-disable_unload_metrics.patch
 extend_apply_webpreferences.patch
 build_libc_as_static_library.patch
 build_do_not_depend_on_packed_resource_integrity.patch

patches/chromium/disable_unload_metrics.patch

@@ -1,45 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Cheng Zhao <zcbenz@gmail.com>
-Date: Thu, 20 Sep 2018 17:45:47 -0700
-Subject: fix: disable unload metrics
-
-Chromium introduced unload metrics in:
-https://chromium-review.googlesource.com/c/chromium/src/+/2314877
-
-Which would cause some DCHECKs to assert in Electron:
-https://github.com/electron/electron/issues/27717
-
-And it would then crash and make some tests fail:
-crashReporter module should send minidump when sandboxed renderer crashes api-crash-reporter-spec.ts 643 ms
-Error message:
-ptype: expected 'browser' to equal 'renderer'
-Error stack trace:
-AssertionError: ptype: expected 'browser' to equal 'renderer'
-    at checkCrash (electron\spec\api-crash-reporter-spec.ts:39:35)
-    at Context.<anonymous> (electron\spec\api-crash-reporter-spec.ts:154:7)
-    at runMicrotasks (<anonymous>)
-    at processTicksAndRejections (internal/process/task_queues.js:93:5)
-
-This patch temporarily disables the metrics so we can have green CI, and we
-should continue seeking for a real fix.
-
-diff --git a/content/browser/renderer_host/navigator.cc b/content/browser/renderer_host/navigator.cc
-index d976c082529a62bcef7352531ced808e5970027e..31e95005359f6e8e4e18ebd75324940f4fdd11eb 100644
---- a/content/browser/renderer_host/navigator.cc
-+++ b/content/browser/renderer_host/navigator.cc
-@@ -1476,6 +1476,7 @@ void Navigator::RecordNavigationMetrics(
-             .InMilliseconds());
-   }
- 
-+#if 0
-   // If this is a same-process navigation and we have timestamps for unload
-   // durations, fill those metrics out as well.
-   if (params.unload_start && params.unload_end &&
-@@ -1525,6 +1526,7 @@ void Navigator::RecordNavigationMetrics(
-          first_before_unload_start_time)
-             .InMilliseconds());
-   }
-+#endif
- 
-   builder.Record(ukm::UkmRecorder::Get());
-   metrics_data_.reset();