flags: remove deceased flags from metadata

This also removes a now-unneeded include in about_flags.cc.

TBR=avi@chromium.org

Bug: None
Change-Id: I9c553e4604ab2d101accb35916ff639fce53dcce
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1559872
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Auto-Submit: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#649144}

chrome/browser/about_flags.cc

@@ -106,7 +106,6 @@
 #include "content/public/common/buildflags.h"
 #include "content/public/common/content_features.h"
 #include "content/public/common/content_switches.h"
-#include "content/public/common/feature_h264_with_openh264_ffmpeg.h"
 #include "device/base/features.h"
 #include "device/fido/features.h"
 #include "device/vr/buildflags/buildflags.h"

chrome/browser/flag-metadata.json

@@ -197,11 +197,6 @@
     "owners": [ "tmartino" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "autofill-dynamic-forms",
-    "owners": [ "sebsg" ],
-    "expiry_milestone": 72
-  },
   {
     "name": "autofill-enable-company-name",
     "owners": [ "sebsg" ],
@@ -251,11 +246,6 @@
     // alongside the Autofill Auth Project, which could be as late as ~Q3.
     "expiry_milestone": 79
   },
-  {
-    "name": "autofill-prefilled-fields",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "autofill-profile-client-validation",
     "owners": [ "parastoog" ],
@@ -291,11 +281,6 @@
     "owners": [ "ioanap", "fhorschig" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "automatic-tab-discarding",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "autoplay-policy",
     // "owners": [ "your-team" ],
@@ -306,11 +291,6 @@
     "owners": [ "sorin", "waffles", "tiborg" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "bookmark-apps",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "bypass-app-banner-engagement-checks",
     // "owners": [ "your-team" ],
@@ -441,11 +421,6 @@
     "owners": [ "//chrome/android/java/src/org/chromium/chrome/browser/contextual_suggestions/OWNERS" ],
     "expiry_milestone": 74
   },
-  {
-    "name": "create-app-windows-in-app",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "cros-regions-mode",
     // "owners": [ "your-team" ],
@@ -569,11 +544,6 @@
     // "owners": [ "your-team" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "disable-hosted-apps-in-windows",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     // See https://crbug.com/882238.
     "name": "disable-ipc-flooding-protection",
@@ -942,11 +912,6 @@
     "owners": [ "schenney", "paint-dev" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "enable-blink-heap-unified-garbage-collection",
-    "owners": [ "mlippautz" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "enable-bloated-renderer-detection",
     "owners": [ "ulan" ],
@@ -1170,11 +1135,6 @@
     "owners": [ "mortonm@chromium.org" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "enable-fullscreen-handwriting-virtual-keyboard",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "enable-future-v8-vm-features",
     "owners": [ "hablich" ],
@@ -1406,11 +1366,6 @@
     // without easy access to startup time configuration.
     "expiry_milestone": -1
   },
-  {
-    "name": "enable-new-contacts-picker",
-    "owners": [ "finnur", "peter" ],
-    "expiry_milestone": 74
-  },
   {
     "name": "download-auto-resumption-native",
     "owners": [ "shaktisahu", "qinmin" ],
@@ -1701,11 +1656,6 @@
     // "owners": [ "your-team" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "enable-stylus-virtual-keyboard",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "enable-suggestions-with-substring-match",
     // "owners": [ "your-team" ],
@@ -1871,11 +1821,6 @@
     // Useful for debugging the virtual keyboard on non-tablet devices.
     "expiry_milestone": -1
   },
-  {
-    "name": "enable-virtual-keyboard-ukm",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "enable-viz-display-compositor",
     "owners": [ "fsamuel", "kylechar" ],
@@ -1944,11 +1889,6 @@
     "owners": [ "rijubrata.bhaumik@intel.com","reillyg" ],
     "expiry_milestone": 79
   },
-  {
-    "name": "enable-webrtc-h264-with-openh264-ffmpeg",
-    // "owners": [ "your-team" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "enable-webrtc-hide-local-ips-with-mdns",
     // "owners": [ "your-team" ],
@@ -3070,11 +3010,6 @@
     "owners": [ "security-dev" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "upcoming-ui-features",
-    "owners": [ "robliao" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "update-menu-item-custom-summary",
     "owners": [ "//chrome/android/java/src/org/chromium/chrome/browser/omaha/OWNERS" ],
@@ -3176,11 +3111,6 @@
     "owners": [ "//third_party/blink/renderer/modules/xr/OWNERS", "xr-dev@chromium.org" ],
     "expiry_milestone": 79
   },
-  {
-    "name": "webxr-gamepad-support",
-    "owners": [ "//third_party/blink/renderer/modules/xr/OWNERS", "xr-dev@chromium.org" ],
-    "expiry_milestone": 76
-  },
   {
     "name": "webxr-hit-test",
     "owners": [ "//third_party/blink/renderer/modules/xr/OWNERS", "xr-dev@chromium.org" ],