ui: Add debug flag for slowing down all UI animations.

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 711 matching lines @@
      ENABLE_DISABLE_VALUE_TYPE(switches::kEnableDisplayList2dCanvas,
                                switches::kDisableDisplayList2dCanvas)},
     {"enable-canvas-2d-dynamic-rendering-mode-switching",
      IDS_FLAGS_ENABLE_2D_CANVAS_DYNAMIC_RENDERING_MODE_SWITCHING_NAME,
      IDS_FLAGS_ENABLE_2D_CANVAS_DYNAMIC_RENDERING_MODE_SWITCHING_DESCRIPTION,
      kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableCanvas2dDynamicRenderingModeSwitching)},
     {"composited-layer-borders", IDS_FLAGS_COMPOSITED_LAYER_BORDERS,
      IDS_FLAGS_COMPOSITED_LAYER_BORDERS_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(cc::switches::kShowCompositedLayerBorders)},
+    {"ui-slow-animations",
+     IDS_FLAGS_UI_SLOW_ANIMATIONS_NAME,
+     IDS_FLAGS_UI_SLOW_ANIMATIONS_DESCRIPTION, kOsCrOS,
+     SINGLE_VALUE_TYPE(switches::kUISlowAnimations)},
     {"gl-composited-texture-quad-borders",
      IDS_FLAGS_GL_COMPOSITED_TEXTURE_QUAD_BORDERS,
      IDS_FLAGS_GL_COMPOSITED_TEXTURE_QUAD_BORDERS_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(cc::switches::kGlCompositedTextureQuadBorder)},
 #if BUILDFLAG(ENABLE_WEBRTC)
     {"disable-webrtc-hw-decoding", IDS_FLAGS_WEBRTC_HW_DECODING_NAME,
      IDS_FLAGS_WEBRTC_HW_DECODING_DESCRIPTION, kOsAndroid | kOsCrOS,
      SINGLE_DISABLE_VALUE_TYPE(switches::kDisableWebRtcHWDecoding)},
     {"disable-webrtc-hw-vp8-encoding", IDS_FLAGS_WEBRTC_HW_VP8_ENCODING_NAME,
      IDS_FLAGS_WEBRTC_HW_VP8_ENCODING_DESCRIPTION, kOsAndroid | kOsCrOS,
@@ skipping 1634 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags