diff -up chromium-98.0.4758.80/chrome/browser/about_flags.cc.accel-mjpeg chromium-98.0.4758.80/chrome/browser/about_flags.cc
--- chromium-98.0.4758.80/chrome/browser/about_flags.cc.accel-mjpeg	2022-02-01 00:41:40.000000000 +0000
+++ chromium-98.0.4758.80/chrome/browser/about_flags.cc	2022-02-02 19:23:15.554137616 +0000
@@ -3822,12 +3822,12 @@ const FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kWebXrForceRuntimeDescription, kOsDesktop,
      MULTI_VALUE_TYPE(kWebXrForceRuntimeChoices)},
 #endif  // ENABLE_VR
-#if BUILDFLAG(IS_CHROMEOS_ASH)
+#if BUILDFLAG(IS_CHROMEOS_ASH) || defined(OS_LINUX)
     {"disable-accelerated-mjpeg-decode",
      flag_descriptions::kAcceleratedMjpegDecodeName,
-     flag_descriptions::kAcceleratedMjpegDecodeDescription, kOsCrOS,
+     flag_descriptions::kAcceleratedMjpegDecodeDescription, kOsCrOS | kOsLinux,
      SINGLE_DISABLE_VALUE_TYPE(switches::kDisableAcceleratedMjpegDecode)},
-#endif  // BUILDFLAG(IS_CHROMEOS_ASH)
+#endif  // BUILDFLAG(IS_CHROMEOS_ASH) || OS_LINUX
     {"system-keyboard-lock", flag_descriptions::kSystemKeyboardLockName,
      flag_descriptions::kSystemKeyboardLockDescription, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kSystemKeyboardLock)},
diff -up chromium-98.0.4758.80/chrome/browser/flag_descriptions.cc.accel-mjpeg chromium-98.0.4758.80/chrome/browser/flag_descriptions.cc
--- chromium-98.0.4758.80/chrome/browser/flag_descriptions.cc.accel-mjpeg	2022-02-02 19:23:15.555137569 +0000
+++ chromium-98.0.4758.80/chrome/browser/flag_descriptions.cc	2022-02-02 19:30:58.315465225 +0000
@@ -3979,7 +3979,7 @@ const char kUseAngleGL[] = "OpenGL";
 
 // Chrome OS -------------------------------------------------------------------
 
-#if BUILDFLAG(IS_CHROMEOS_ASH)
+#if BUILDFLAG(IS_CHROMEOS_ASH) || (defined(OS_LINUX) && !defined(OS_ANDROID))
 
 const char kAcceleratedMjpegDecodeName[] =
     "Hardware-accelerated mjpeg decode for captured frame";
@@ -3987,6 +3987,10 @@ const char kAcceleratedMjpegDecodeDescri
     "Enable hardware-accelerated mjpeg decode for captured frame where "
     "available.";
 
+#endif
+
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+
 const char kAllowDisableMouseAccelerationName[] =
     "Allow disabling mouse acceleration";
 const char kAllowDisableMouseAccelerationDescription[] =
diff -up chromium-98.0.4758.80/chrome/browser/flag_descriptions.h.accel-mjpeg chromium-98.0.4758.80/chrome/browser/flag_descriptions.h
--- chromium-98.0.4758.80/chrome/browser/flag_descriptions.h.accel-mjpeg	2022-02-02 19:23:15.556137523 +0000
+++ chromium-98.0.4758.80/chrome/browser/flag_descriptions.h	2022-02-02 19:31:59.585595773 +0000
@@ -2297,11 +2297,15 @@ extern const char kUseAngleGL[];
 
 // Chrome OS ------------------------------------------------------------------
 
-#if BUILDFLAG(IS_CHROMEOS_ASH)
+#if BUILDFLAG(IS_CHROMEOS_ASH) || (defined(OS_LINUX) && !defined(OS_ANDROID))
 
 extern const char kAcceleratedMjpegDecodeName[];
 extern const char kAcceleratedMjpegDecodeDescription[];
 
+#endif
+
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+
 extern const char kAllowDisableMouseAccelerationName[];
 extern const char kAllowDisableMouseAccelerationDescription[];