diff -up chromium-89.0.4389.72/chrome/browser/about_flags.cc.accel-mjpeg chromium-89.0.4389.72/chrome/browser/about_flags.cc
--- chromium-89.0.4389.72/chrome/browser/about_flags.cc.accel-mjpeg	2021-03-04 14:02:26.379527446 -0500
+++ chromium-89.0.4389.72/chrome/browser/about_flags.cc	2021-03-04 14:06:40.208830372 -0500
@@ -3526,12 +3526,12 @@ 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-89.0.4389.72/chrome/browser/flag_descriptions.cc.accel-mjpeg chromium-89.0.4389.72/chrome/browser/flag_descriptions.cc
--- chromium-89.0.4389.72/chrome/browser/flag_descriptions.cc.accel-mjpeg	2021-03-02 12:45:03.000000000 -0500
+++ chromium-89.0.4389.72/chrome/browser/flag_descriptions.cc	2021-03-04 14:07:56.648199844 -0500
@@ -3704,12 +3704,22 @@ const char kAccountManagementFlowsV2Desc
     "Settings. "
     "See go/betterAM";
 
+#endif
+
+#if BUILDFLAG(IS_CHROMEOS_ASH) || (defined(OS_LINUX) && !defined(OS_ANDROID))
+
 const char kAcceleratedMjpegDecodeName[] =
     "Hardware-accelerated mjpeg decode for captured frame";
 const char kAcceleratedMjpegDecodeDescription[] =
     "Enable hardware-accelerated mjpeg decode for captured frame where "
     "available.";
 
+#endif
+
+// Chrome OS -------------------------------------------------------------------
+
+#if defined(OS_CHROMEOS)
+
 const char kAllowDisableMouseAccelerationName[] =
     "Allow disabling mouse acceleration";
 const char kAllowDisableMouseAccelerationDescription[] =
diff -up chromium-89.0.4389.72/chrome/browser/flag_descriptions.h.accel-mjpeg chromium-89.0.4389.72/chrome/browser/flag_descriptions.h
--- chromium-89.0.4389.72/chrome/browser/flag_descriptions.h.accel-mjpeg	2021-03-04 14:02:26.381527456 -0500
+++ chromium-89.0.4389.72/chrome/browser/flag_descriptions.h	2021-03-04 14:09:10.842558552 -0500
@@ -2138,9 +2138,17 @@ extern const char kVideoToolboxVp9Decodi
 extern const char kAccountManagementFlowsV2Name[];
 extern const char kAccountManagementFlowsV2Description[];
 
+#endif
+
+#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[];