cromite/build/patches/Add-PartialLowEndModeOnMidRangeDevices-flag.patch
2025-11-22 16:25:29 +01:00

77 lines
3.1 KiB
Diff

From: uazo <uazo@users.noreply.github.com>
Date: Wed, 6 Dec 2023 10:21:45 +0000
Subject: Add PartialLowEndModeOnMidRangeDevices flag
adds a new flag in chrome://flags to re-enable the experiment
License: GPL-2.0-or-later - https://spdx.org/licenses/GPL-2.0-or-later.html
---
base/features.cc | 4 ++++
content/renderer/render_process_impl.cc | 9 +++++++++
.../Add-PartialLowEndModeOnMidRangeDevices-flag.inc | 12 ++++++++++++
3 files changed, 25 insertions(+)
create mode 100644 cromite_flags/chrome/browser/about_flags_cc/Add-PartialLowEndModeOnMidRangeDevices-flag.inc
diff --git a/base/features.cc b/base/features.cc
--- a/base/features.cc
+++ b/base/features.cc
@@ -202,6 +202,10 @@ bool IsReducePPMsEnabled() {
return g_is_reduce_ppms_enabled.load(std::memory_order_relaxed);
}
+#if BUILDFLAG(IS_ANDROID)
+SET_CROMITE_FEATURE_DISABLED(kPartialLowEndModeOnMidRangeDevices);
+#endif
+
void Init(EmitThreadControllerProfilerMetadata
emit_thread_controller_profiler_metadata) {
g_is_reduce_ppms_enabled.store(FeatureList::IsEnabled(kReducePPMs),
diff --git a/content/renderer/render_process_impl.cc b/content/renderer/render_process_impl.cc
--- a/content/renderer/render_process_impl.cc
+++ b/content/renderer/render_process_impl.cc
@@ -2,6 +2,7 @@
// 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 "content/renderer/render_process_impl.h"
#include "build/build_config.h"
@@ -122,10 +123,18 @@ RenderProcessImpl::RenderProcessImpl()
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisallowV8FeatureFlagOverrides);
if (!disallow_v8_feature_flag_overrides) {
+#if BUILDFLAG(IS_ANDROID)
+ if (base::SysInfo::IsLowEndDevice()
+ && base::FeatureList::IsEnabled(base::features::kPartialLowEndModeOnMidRangeDevices)) {
+ std::string_view optimize_flag("--optimize-for-size");
+ v8::V8::SetFlagsFromString(optimize_flag.data(), optimize_flag.size());
+ }
+#else
if (base::SysInfo::IsLowEndDevice()) {
std::string_view optimize_flag("--optimize-for-size");
v8::V8::SetFlagsFromString(optimize_flag.data(), optimize_flag.size());
}
+#endif
////////////////////////////////////////////////////////////////////////////
// V8 flags are typically set in gin/v8_initializer.cc. Only those flags
diff --git a/cromite_flags/chrome/browser/about_flags_cc/Add-PartialLowEndModeOnMidRangeDevices-flag.inc b/cromite_flags/chrome/browser/about_flags_cc/Add-PartialLowEndModeOnMidRangeDevices-flag.inc
new file mode 100644
--- /dev/null
+++ b/cromite_flags/chrome/browser/about_flags_cc/Add-PartialLowEndModeOnMidRangeDevices-flag.inc
@@ -0,0 +1,12 @@
+#if BUILDFLAG(IS_ANDROID)
+
+#ifdef FLAG_SECTION
+
+ {"partial-lowendmode-on-midrange-devices",
+ "Partial Low End Mode On Mid Range Devices",
+ "Enables the LowEndDeviceMode experiment in devices with 4-6 gb of ram.",
+ kOsAndroid, FEATURE_VALUE_TYPE(base::features::kPartialLowEndModeOnMidRangeDevices)},
+
+#endif
+
+#endif
--