[ash-md] Improves smoothness with many windows in overview

chrome/browser/about_flags.cc

 // Copyright (c) 2012 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 "chrome/browser/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 361 matching lines @@
 const FeatureEntry::Choice kAshMaterialDesignChoices[] = {
     {IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", ""},
     {IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED, ash::switches::kAshMaterialDesign,
      ash::switches::kAshMaterialDesignDisabled},
     {IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED, ash::switches::kAshMaterialDesign,
      ash::switches::kAshMaterialDesignEnabled},
     {IDS_FLAGS_ASH_MD_EXPERIMENTAL, ash::switches::kAshMaterialDesign,
      ash::switches::kAshMaterialDesignExperimental},
 };
 
+const FeatureEntry::Choice kAshMaxWindowsToUseMaskInOverviewChoices[] = {
+    {IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", ""},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_MASK_UNLIMITED,
+     ash::switches::kAshMaxWindowsToUseMaskInOverview, "-1"},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_MASK_ZERO,
+     ash::switches::kAshMaxWindowsToUseMaskInOverview, "0"},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_MASK_FIVE,
+     ash::switches::kAshMaxWindowsToUseMaskInOverview, "5"},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_MASK_TEN,
+     ash::switches::kAshMaxWindowsToUseMaskInOverview, "10"},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_MASK_FIFTEEN,
+     ash::switches::kAshMaxWindowsToUseMaskInOverview, "15"},
+};
+
+const FeatureEntry::Choice kAshMaxWindowsToUseShapeInOverviewChoices[] = {
+    {IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", ""},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_SHAPE_UNLIMITED,
+     ash::switches::kAshMaxWindowsToUseShapeInOverview, "-1"},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_SHAPE_ZERO,
+     ash::switches::kAshMaxWindowsToUseShapeInOverview, "0"},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_SHAPE_FIVE,
+     ash::switches::kAshMaxWindowsToUseShapeInOverview, "5"},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_SHAPE_TEN,
+     ash::switches::kAshMaxWindowsToUseShapeInOverview, "10"},
+    {IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_SHAPE_FIFTEEN,
+     ash::switches::kAshMaxWindowsToUseShapeInOverview, "15"},
+};
+
 const FeatureEntry::Choice kAshMaterialDesignInkDropAnimationSpeed[] = {
     {IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", ""},
     {IDS_FLAGS_MATERIAL_DESIGN_INK_DROP_ANIMATION_FAST,
      switches::kMaterialDesignInkDropAnimationSpeed,
      switches::kMaterialDesignInkDropAnimationSpeedFast},
     {IDS_FLAGS_MATERIAL_DESIGN_INK_DROP_ANIMATION_SLOW,
      switches::kMaterialDesignInkDropAnimationSpeed,
      switches::kMaterialDesignInkDropAnimationSpeedSlow}};
 
 const FeatureEntry::Choice kDataSaverPromptChoices[] = {
@@ skipping 377 matching lines @@
      IDS_FLAGS_GPU_RASTERIZATION_DESCRIPTION, kOsAll,
      MULTI_VALUE_TYPE(kEnableGpuRasterizationChoices)},
     {"gpu-rasterization-msaa-sample-count",
      IDS_FLAGS_GPU_RASTERIZATION_MSAA_SAMPLE_COUNT_NAME,
      IDS_FLAGS_GPU_RASTERIZATION_MSAA_SAMPLE_COUNT_DESCRIPTION, kOsAll,
      MULTI_VALUE_TYPE(kGpuRasterizationMSAASampleCountChoices)},
     {"enable-experimental-web-platform-features",  // FLAGS:RECORD_UMA
      IDS_FLAGS_EXPERIMENTAL_WEB_PLATFORM_FEATURES_NAME,
      IDS_FLAGS_EXPERIMENTAL_WEB_PLATFORM_FEATURES_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableExperimentalWebPlatformFeatures)},
-    {"enable-web-bluetooth", IDS_FLAGS_WEB_BLUETOOTH_NAME,
-     IDS_FLAGS_WEB_BLUETOOTH_DESCRIPTION,
+    {"enable-web-bluetooth",  // FLAGS:RECORD_UMA
+     IDS_FLAGS_WEB_BLUETOOTH_NAME, IDS_FLAGS_WEB_BLUETOOTH_DESCRIPTION,
      kOsCrOS | kOsMac | kOsAndroid | kOsLinux,
      SINGLE_VALUE_TYPE(switches::kEnableWebBluetooth)},
 #if defined(ENABLE_EXTENSIONS)
     {"enable-ble-advertising-in-apps",
      IDS_FLAGS_BLE_ADVERTISING_IN_EXTENSIONS_NAME,
      IDS_FLAGS_BLE_ADVERTISING_IN_EXTENSIONS_DESCRIPTION, kOsCrOS,
      SINGLE_VALUE_TYPE(extensions::switches::kEnableBLEAdvertising)},
 #endif
     {"enable-devtools-experiments", IDS_FLAGS_DEVTOOLS_EXPERIMENTS_NAME,
      IDS_FLAGS_DEVTOOLS_EXPERIMENTS_DESCRIPTION, kOsDesktop,
@@ skipping 153 matching lines @@
     },
     {"ash-md", IDS_FLAGS_ASH_MD, IDS_FLAGS_ASH_MD_DESCRIPTION, kOsCrOS,
      MULTI_VALUE_TYPE(kAshMaterialDesignChoices)},
     {
         "ash-stable-overview-order", IDS_FLAGS_ASH_STABLE_OVERVIEW_ORDER_NAME,
         IDS_FLAGS_ASH_STABLE_OVERVIEW_ORDER_DESCRIPTION, kOsCrOS,
         ENABLE_DISABLE_VALUE_TYPE(
             ash::switches::kAshEnableStableOverviewOrder,
             ash::switches::kAshDisableStableOverviewOrder),
     },
+    {
+        "ash-max-previews-to-use-mask",
+        IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_MASK_NAME,
+        IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_MASK_DESCRIPTION, kOsCrOS,
+        MULTI_VALUE_TYPE(kAshMaxWindowsToUseMaskInOverviewChoices),
+    },
+    {
+        "ash-max-previews-to-use-shape",
+        IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_SHAPE_NAME,
+        IDS_FLAGS_ASH_MAX_PREVIEWS_TO_USE_SHAPE_DESCRIPTION, kOsCrOS,
+        MULTI_VALUE_TYPE(kAshMaxWindowsToUseShapeInOverviewChoices),
+    },
 #endif  // defined(USE_ASH)
 #if defined(OS_CHROMEOS)
     {"material-design-ink-drop-animation-speed",
      IDS_FLAGS_MATERIAL_DESIGN_INK_DROP_ANIMATION_SPEED_NAME,
      IDS_FLAGS_MATERIAL_DESIGN_INK_DROP_ANIMATION_SPEED_DESCRIPTION, kOsCrOS,
      MULTI_VALUE_TYPE(kAshMaterialDesignInkDropAnimationSpeed)},
     {"disable-cloud-import", IDS_FLAGS_CLOUD_IMPORT,
      IDS_FLAGS_CLOUD_IMPORT_DESCRIPTION, kOsCrOS,
      SINGLE_DISABLE_VALUE_TYPE(chromeos::switches::kDisableCloudImport)},
     {"enable-request-tablet-site", IDS_FLAGS_REQUEST_TABLET_SITE_NAME,
@@ skipping 1008 matching lines @@
     {"files-quick-view", IDS_FLAGS_FILES_QUICK_VIEW_NAME,
      IDS_FLAGS_FILES_QUICK_VIEW_DESCRIPTION, kOsCrOS,
      ENABLE_DISABLE_VALUE_TYPE(chromeos::switches::kEnableFilesQuickView,
                                chromeos::switches::kDisableFilesQuickView)},
 #endif  // defined(OS_CHROMEOS)
 #if defined(OS_ANDROID)
     {"enable-web-payments", IDS_FLAGS_ENABLE_WEB_PAYMENTS_NAME,
      IDS_FLAGS_ENABLE_WEB_PAYMENTS_DESCRIPTION, kOsAndroid,
      FEATURE_VALUE_TYPE(features::kWebPayments)},
 #endif  // defined(OS_ANDROID)
-    // NOTE: Adding new command-line switches requires adding corresponding
-    // entries to enum "LoginCustomFlags" in histograms.xml. See note in
+        // NOTE: Adding new command-line switches requires adding corresponding
+        // entries to enum "LoginCustomFlags" in histograms.xml. See note in
     // histograms.xml and don't forget to run AboutFlagsHistogramTest unit test.
 };
 
 class FlagsStateSingleton {
  public:
   FlagsStateSingleton()
       : flags_state_(kFeatureEntries, arraysize(kFeatureEntries)) {}
   ~FlagsStateSingleton() {}
 
   static FlagsStateSingleton* GetInstance() {
@@ skipping 175 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags