Initial CL for Data Saver (Flywheel) prompt when cellular network detected

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 407 matching lines @@
     "none" },
   { IDS_ASH_SCREEN_ROTATION_ANIMATION_PARTIAL_ROTATION,
     ash::switches::kAshEnableScreenRotationAnimation,
     "partial-rotation" },
   { IDS_ASH_SCREEN_ROTATION_ANIMATION_FULL_ROTATION,
     ash::switches::kAshEnableScreenRotationAnimation,
     "full-rotation" }
 };
 #endif
 
+#if defined(OS_CHROMEOS)
+const Experiment::Choice kDataSaverPromptChoices[] = {
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
+    chromeos::switches::kDisableDataSaverPrompt, "" },
+  { IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
+    chromeos::switches::kEnableDataSaverPrompt, "" },
+  { IDS_FLAGS_DATASAVER_PROMPT_DEMO_MODE,
+    chromeos::switches::kEnableDataSaverPrompt,
+    chromeos::switches::kDataSaverPromptDemoMode },
+};
+#endif
+
 // 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 1874 matching lines @@
 #endif  // defined(ENABLE_APP_LIST)
 #if defined(OS_CHROMEOS)
   {
     "enable-mtp-write-support",
     IDS_FLAG_ENABLE_MTP_WRITE_SUPPORT_NAME,
     IDS_FLAG_ENABLE_MTP_WRITE_SUPPORT_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(chromeos::switches::kEnableMtpWriteSupport)
   },
 #endif  // defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS)
+  {
+    "enable-datasaver-prompt",
+    IDS_FLAGS_DATASAVER_PROMPT_NAME,
+    IDS_FLAGS_DATASAVER_PROMPT_DESCRIPTION,
+    kOsCrOS,
+    MULTI_VALUE_TYPE(kDataSaverPromptChoices)
+  },
+#endif  // defined(OS_CHROMEOS)
   // 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 568 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags