| // Copyright (c) 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/common/content_switches_internal.h" |
| |
| #include <string> |
| |
| #include "base/command_line.h" |
| #include "base/feature_list.h" |
| #include "base/metrics/field_trial.h" |
| #include "build/build_config.h" |
| #include "content/public/common/content_switches.h" |
| |
| #if defined(OS_WIN) |
| #include "base/win/windows_version.h" |
| #endif |
| |
| namespace content { |
| |
| namespace { |
| |
| #if defined(OS_WIN) |
| const base::Feature kUseZoomForDsfEnabledByDefault { |
| "use-zoom-for-dsf enabled by default", base::FEATURE_ENABLED_BY_DEFAULT |
| }; |
| #endif |
| |
| bool IsUseZoomForDSFEnabledByDefault() { |
| #if defined(OS_CHROMEOS) || defined(OS_LINUX) |
| return true; |
| #elif defined(OS_WIN) |
| return base::FeatureList::IsEnabled(kUseZoomForDsfEnabledByDefault); |
| #else |
| return false; |
| #endif |
| } |
| |
| #if defined(ANDROID) |
| const base::Feature kProgressBarCompletionResourcesBeforeDOMContentLoaded { |
| "progress-bar-completion-resources-before-domContentLoaded", |
| base::FEATURE_DISABLED_BY_DEFAULT}; |
| #endif |
| |
| } // namespace |
| |
| bool IsPinchToZoomEnabled() { |
| const base::CommandLine& command_line = |
| *base::CommandLine::ForCurrentProcess(); |
| |
| // Enable pinch everywhere unless it's been explicitly disabled. |
| return !command_line.HasSwitch(switches::kDisablePinch); |
| } |
| |
| #if defined(OS_WIN) |
| |
| bool IsWin32kLockdownEnabled() { |
| if (base::win::GetVersion() < base::win::VERSION_WIN8) |
| return false; |
| const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess(); |
| if (cmd_line->HasSwitch(switches::kDisableWin32kLockDown)) |
| return false; |
| return true; |
| } |
| |
| #endif |
| |
| V8CacheOptions GetV8CacheOptions() { |
| const base::CommandLine& command_line = |
| *base::CommandLine::ForCurrentProcess(); |
| std::string v8_cache_options = |
| command_line.GetSwitchValueASCII(switches::kV8CacheOptions); |
| if (v8_cache_options.empty()) |
| v8_cache_options = base::FieldTrialList::FindFullName("V8CacheOptions"); |
| if (v8_cache_options == "none") { |
| return V8_CACHE_OPTIONS_NONE; |
| } else if (v8_cache_options == "parse") { |
| return V8_CACHE_OPTIONS_PARSE; |
| } else if (v8_cache_options == "code") { |
| return V8_CACHE_OPTIONS_CODE; |
| } else { |
| return V8_CACHE_OPTIONS_DEFAULT; |
| } |
| } |
| |
| bool IsUseZoomForDSFEnabled() { |
| static bool use_zoom_for_dsf_enabled_by_default = |
| IsUseZoomForDSFEnabledByDefault(); |
| base::CommandLine* command_line = base::CommandLine::ForCurrentProcess(); |
| bool enabled = |
| (command_line->HasSwitch(switches::kEnableUseZoomForDSF) || |
| use_zoom_for_dsf_enabled_by_default) && |
| command_line->GetSwitchValueASCII( |
| switches::kEnableUseZoomForDSF) != "false"; |
| |
| return enabled; |
| } |
| |
| ProgressBarCompletion GetProgressBarCompletionPolicy() { |
| #if defined(OS_ANDROID) |
| const base::CommandLine& command_line = |
| *base::CommandLine::ForCurrentProcess(); |
| std::string progress_bar_completion = |
| command_line.GetSwitchValueASCII(switches::kProgressBarCompletion); |
| if (progress_bar_completion == "loadEvent") |
| return ProgressBarCompletion::LOAD_EVENT; |
| if (progress_bar_completion == "resourcesBeforeDOMContentLoaded") |
| return ProgressBarCompletion::RESOURCES_BEFORE_DCL; |
| if (progress_bar_completion == "domContentLoaded") |
| return ProgressBarCompletion::DOM_CONTENT_LOADED; |
| if (progress_bar_completion == |
| "resourcesBeforeDOMContentLoadedAndSameOriginIframes") { |
| return ProgressBarCompletion::RESOURCES_BEFORE_DCL_AND_SAME_ORIGIN_IFRAMES; |
| } |
| // The command line, which is set by the user, takes priority. Otherwise, |
| // fall back to the feature flag. |
| if (base::FeatureList::IsEnabled( |
| kProgressBarCompletionResourcesBeforeDOMContentLoaded)) { |
| return ProgressBarCompletion::RESOURCES_BEFORE_DCL; |
| } |
| #endif |
| return ProgressBarCompletion::LOAD_EVENT; |
| } |
| |
| } // namespace content |