[Android] Add phone progress bar animation behind a flag.

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 528 matching lines @@
     "online-check-only" }
 };
 
 const Experiment::Choice kV8CacheOptionsChoices[] = {
   { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
   { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED, switches::kV8CacheOptions, "none" },
   { IDS_FLAGS_V8_CACHE_OPTIONS_PARSE, switches::kV8CacheOptions, "parse" },
   { IDS_FLAGS_V8_CACHE_OPTIONS_CODE, switches::kV8CacheOptions, "code" },
 };
 
+#if defined(OS_ANDROID)
+const Experiment::Choice kProgressBarAnimationChoices[] = {
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
+      switches::kProgressBarAnimation, "disabled" },
+  { IDS_FLAGS_PROGRESS_BAR_ANIMATION_SMOOTH,
+      switches::kProgressBarAnimation, "smooth" },
+  { IDS_FLAGS_PROGRESS_BAR_ANIMATION_FAST_START,
+      switches::kProgressBarAnimation, "fast-start" },
+};
+#endif  // defined(OS_ANDROID)
+
 // RECORDING USER METRICS FOR FLAGS:
 // -----------------------------------------------------------------------------
 // The first line of the experiment is the internal name. If you'd like to
 // gather statistics about the usage of your flag, you should append a marker
 // comment to the end of the feature name, like so:
 //   "my-special-feature",  // FLAGS:RECORD_UMA
 //
 // After doing that, run
 //   tools/metrics/actions/extract_actions.py
 // to add the metric to actions.xml (which will enable UMA to record your
@@ skipping 1513 matching lines @@
      SINGLE_VALUE_TYPE(switches::kEnableNewTaskManager)
     },
 #endif  // defined(ENABLE_TASK_MANAGER)
     {"simplified-fullscreen-ui",
      IDS_FLAGS_SIMPLIFIED_FULLSCREEN_UI_NAME,
      IDS_FLAGS_SIMPLIFIED_FULLSCREEN_UI_DESCRIPTION,
      kOsDesktop,
      ENABLE_DISABLE_VALUE_TYPE(switches::kEnableSimplifiedFullscreenUI,
                                switches::kDisableSimplifiedFullscreenUI)
     },
+#if defined(OS_ANDROID)
+    {"progress-bar-animation",
+     IDS_FLAGS_PROGRESS_BAR_ANIMATION_NAME,
+     IDS_FLAGS_PROGRESS_BAR_ANIMATION_DESCRIPTION,
+     kOsAndroid,
+     MULTI_VALUE_TYPE(kProgressBarAnimationChoices)},
+#endif  // defined(OS_ANDROID)
+
     // 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.
 };
 
 const Experiment* experiments = kExperiments;
 size_t num_experiments = arraysize(kExperiments);
 
 // Stores and encapsulates the little state that about:flags has.
 class FlagsState {
@@ skipping 622 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags