// Copyright 2022 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "base/features.h" #include "base/feature_list.h" namespace base::features { // Alphabetical: // Enforce that writeable file handles passed to untrusted processes are not // backed by executable files. BASE_FEATURE(kEnforceNoExecutableFileHandles, "EnforceNoExecutableFileHandles", FEATURE_ENABLED_BY_DEFAULT); // TODO(crbug.com/851128): Roll out this to 100% before replacing existing // NOTREACHED()s with NOTREACHED_NORETURN() as part of NOTREACHED() migration. // Note that a prerequisite for rolling out this experiment is that existing // NOTREACHED reports are at a very low rate. Once this rolls out we should // monitor that crash rates for the experiment population is within a 1-5% or // lower than the control group. BASE_FEATURE(kNotReachedIsFatal, "NotReachedIsFatal", FEATURE_DISABLED_BY_DEFAULT); // Optimizes parsing and loading of data: URLs. BASE_FEATURE(kOptimizeDataUrls, "OptimizeDataUrls", FEATURE_ENABLED_BY_DEFAULT); BASE_FEATURE(kUseRustJsonParser, "UseRustJsonParser", FEATURE_DISABLED_BY_DEFAULT); BASE_FEATURE(kJsonNegativeZero, "JsonNegativeZero", FEATURE_ENABLED_BY_DEFAULT); #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS) // Force to enable LowEndDeviceMode partially on Android 3Gb devices. // (see PartialLowEndModeOnMidRangeDevices below) BASE_FEATURE(kPartialLowEndModeOn3GbDevices, "PartialLowEndModeOn3GbDevices", base::FEATURE_DISABLED_BY_DEFAULT); // Used to enable LowEndDeviceMode partially on Android and ChromeOS mid-range // devices. Such devices aren't considered low-end, but we'd like experiment // with a subset of low-end features to see if we get a good memory vs. // performance tradeoff. // // TODO(crbug.com/1434873): |#if| out 32-bit before launching or going to // high Stable %, because we will enable the feature only for <8GB 64-bit // devices, where we didn't ship yet. However, we first need a larger // population to collect data. BASE_FEATURE(kPartialLowEndModeOnMidRangeDevices, "PartialLowEndModeOnMidRangeDevices", #if BUILDFLAG(IS_ANDROID) base::FEATURE_ENABLED_BY_DEFAULT); #elif BUILDFLAG(IS_CHROMEOS) base::FEATURE_DISABLED_BY_DEFAULT); #endif #endif // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS) #if BUILDFLAG(IS_ANDROID) // Whether to report frame metrics to the Android.FrameTimeline.* histograms. BASE_FEATURE(kCollectAndroidFrameTimelineMetrics, "CollectAndroidFrameTimelineMetrics", base::FEATURE_DISABLED_BY_DEFAULT); #endif // BUILDFLAG(IS_ANDROID) } // namespace base::features