alexnj

diff --git a/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom b/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom
index 0d8c64ff3be78..08008cf9b66b0 100644
--- a/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom
+++ b/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom
@@ -3881,6 +3881,8 @@ enum WebFeature {
   kGamepadTouchSurfaceDimension = 4540,
   kSandboxViaFencedFrame = 4541,
   kVisibilityStateObserver = 4542,
+  kCookieGetThirdParty = 4543,
+  kCookieGetFirstParty = 4544,

alexnj

diff --git a/third_party/blink/renderer/core/timing/performance_user_timing.cc b/third_party/blink/renderer/core/timing/performance_user_timing.cc
index 1056e5c6f04d7..3f7a36ba36450 100644
--- a/third_party/blink/renderer/core/timing/performance_user_timing.cc
+++ b/third_party/blink/renderer/core/timing/performance_user_timing.cc
@@ -210,12 +210,28 @@ PerformanceMeasure* UserTiming::Measure(ScriptState* script_state,
     WTF::AddFloatToHash(hash, start_time);
     WTF::AddFloatToHash(hash, end_time);
 
+    v8::Local<v8::Context> context =
+        performance_->GetExecutionContext()->GetIsolate()->GetCurrentContext();

alexnj

diff --git a/base/trace_event/common/trace_event_common.h b/base/trace_event/common/trace_event_common.h
index f2ee4d36b317d..7d5731053bbd7 100644
--- a/base/trace_event/common/trace_event_common.h
+++ b/base/trace_event/common/trace_event_common.h
@@ -965,6 +965,13 @@ struct BASE_EXPORT TraceTimestampTraits<::base::TimeTicks> {
       TRACE_EVENT_PHASE_NESTABLE_ASYNC_BEGIN, category_group, name, id,    \
       TRACE_EVENT_API_CURRENT_THREAD_ID, timestamp, TRACE_EVENT_FLAG_COPY, \
       arg1_name, arg1_val)
+#define TRACE_EVENT_COPY_NESTABLE_ASYNC_BEGIN_WITH_TIMESTAMP2(             \
+    category_group, name, id, timestamp, arg1_name, arg1_val,              \

alexnj

{
  "transformations": [
    [1, "h2:nth-of-type(1)", 6, "Documentation"],
    [2, "img[alt$=\"Logo\"]", 8, "alt", "Marketing alt text"]
  ]
}

alexnj

{
  "lighthouseVersion": "10.0.0",
  "requestedUrl": "https://www.theverge.com/",
  "mainDocumentUrl": "https://www.theverge.com/",
  "finalDisplayedUrl": "https://www.theverge.com/",
  "finalUrl": "https://www.theverge.com/",
  "fetchTime": "2023-02-16T16:34:40.104Z",
  "gatherMode": "navigation",
  "runWarnings": [],
  "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36",

alexnj

{
    "lighthouseVersion": "10.0.1",
    "requestedUrl": "https://www.theverge.com/",
    "mainDocumentUrl": "https://www.theverge.com/",
    "finalDisplayedUrl": "https://www.theverge.com/",
    "finalUrl": "https://www.theverge.com/",
    "fetchTime": "2023-02-16T16:34:40.104Z",
    "gatherMode": "navigation",
    "runWarnings": [],
    "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36",

alexnj

{
  "lighthouseVersion": "9.5.0",
  "requestedUrl": "https://theverge.com/",
  "mainDocumentUrl": "https://www.theverge.com/",
  "finalDisplayedUrl": "https://www.theverge.com/",
  "finalUrl": "https://www.theverge.com/",
  "fetchTime": "2022-12-16T01:34:12.691Z",
  "gatherMode": "navigation",
  "runWarnings": [
    "The page may not be loading as expected because your test URL (https://theverge.com/) was redirected to https://www.theverge.com/. Try testing the second URL directly."

alexnj

{
  "control": {
    "url": "https://todomvc.com/examples/react", 
    "cache": {
    }
  },
  "variants": [
    {
      "weight": 0.5,
      "url": "https://todomvc.com/examples/react", 

alexnj

$ node core/scripts/compare-runs.js --name base --collect -n 20 \
    --urls https://vividmotion.co/
$ node core/scripts/compare-runs.js --name nogpu --collect -n 20 \
    --lh-flags='--chrome-flags=--disable-gpu' --urls https://vividmotion.co/
$ node core/scripts/compare-runs.js --name base --name nogpu --compare  

┌─────────┬───────────────────────────────────────────────┬───────────────────────────┬─────────────────────┬─────────┬──────────────────────┬────────┐
│ (index) │                     name                      │            url            │        mean         │ mean Δ  │          cv          │  cv Δ  │
├─────────┼───────────────────────────────────────────────┼───────────────────────────┼─────────────────────┼─────────┼──────────────────────┼────────┤
│    0    │              'lh:runner:gather'               │ 'https://vividmotion.co/' │ '8808.4 -> 39237.2' │ 30428.8 │   '1.404 -> 0.581'   │  -0.8  │

alexnj

# ab-configurations

transformations follow the structure 
[
  [bitField of flags, CSS selector to modify, operation, ...payloads]
]

Available bit flags are:
0x1 - PRE_UA - Changes are applied prior to User Agent
0x2 - ON_UA - Changes are applied on UA