[Tab Groups] Add about://flags entry for automatic tab group creation.

Bug: 1128703
Change-Id: I2769ea96b8982fdb3b777eebc97b558217fa7ba3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2413109
Commit-Queue: Charlene Yan <cyan@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#807320}

chrome/browser/about_flags.cc

@@ -4119,6 +4119,10 @@ const FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kTabGroupsDescription, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kTabGroups)},
 
+    {"tab-groups-auto-create", flag_descriptions::kTabGroupsAutoCreateName,
+     flag_descriptions::kTabGroupsAutoCreateDescription, kOsDesktop,
+     FEATURE_VALUE_TYPE(features::kTabGroupsAutoCreate)},
+
     {"tab-groups-collapse", flag_descriptions::kTabGroupsCollapseName,
      flag_descriptions::kTabGroupsCollapseDescription, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kTabGroupsCollapse)},

chrome/browser/flag-metadata.json

@@ -4343,6 +4343,11 @@
     "owners": [ "chrome-desktop-ui-seattle@google.com", "connily" ],
     "expiry_milestone": 88
   },
+  {
+    "name": "tab-groups-auto-create",
+    "owners": [ "chrome-desktop-ui-seattle@google.com", "xialinyan" ],
+    "expiry_milestone": 89
+  },
   {
     "name": "tab-groups-collapse",
     "owners": [ "chrome-desktop-ui-seattle@google.com", "xialinyan" ],

chrome/browser/flag_descriptions.cc

@@ -2311,6 +2311,10 @@ const char kTabGroupsDescription[] =
     "Allows users to organize tabs into visually distinct groups, e.g. to "
     "separate tabs associated with different tasks.";
 
+const char kTabGroupsAutoCreateName[] = "Tab Groups Auto Create";
+const char kTabGroupsAutoCreateDescription[] =
+    "Automatically creates groups for users, if tab groups are enabled.";
+
 const char kTabGroupsCollapseName[] = "Tab Groups Collapse";
 const char kTabGroupsCollapseDescription[] =
     "Allows a tab group to be collapsible and expandable, if tab groups are "

chrome/browser/flag_descriptions.h

@@ -1326,6 +1326,9 @@ extern const char kTabToGTSAnimationAndroidDescription[];
 extern const char kTabGroupsName[];
 extern const char kTabGroupsDescription[];
 
+extern const char kTabGroupsAutoCreateName[];
+extern const char kTabGroupsAutoCreateDescription[];
+
 extern const char kTabGroupsCollapseName[];
 extern const char kTabGroupsCollapseDescription[];
 

chrome/browser/ui/ui_features.cc

@@ -63,6 +63,11 @@ const base::Feature kSignInProfileCreationFlow{
 // Enables grouping tabs together in the tab strip. https://crbug.com/905491
 const base::Feature kTabGroups{"TabGroups", base::FEATURE_ENABLED_BY_DEFAULT};
 
+// Automatically create groups for users based on domain.
+// https://crbug.com/1128703
+const base::Feature kTabGroupsAutoCreate{"TabGroupsAutoCreate",
+                                         base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Enables tab groups to be collapsed and expanded. https://crbug.com/1018230
 const base::Feature kTabGroupsCollapse{"TabGroupsCollapse",
                                        base::FEATURE_DISABLED_BY_DEFAULT};

chrome/browser/ui/ui_features.h

@@ -44,6 +44,8 @@ extern const base::Feature kSignInProfileCreationFlow;
 
 extern const base::Feature kTabGroups;
 
+extern const base::Feature kTabGroupsAutoCreate;
+
 extern const base::Feature kTabGroupsCollapse;
 
 extern const base::Feature kTabGroupsCollapseFreezing;

tools/metrics/histograms/enums.xml

@@ -40599,6 +40599,7 @@ from previous Chrome versions.
   <int value="-2017953534" label="enable-hosted-app-shim-creation"/>
   <int value="-2017778637" label="PrintSaveToDrive:disabled"/>
   <int value="-2015293660" label="AccessibilityExposeDisplayNone:disabled"/>
+  <int value="-2014948560" label="TabGroupsAutoCreate:enabled"/>
   <int value="-2013551096" label="ViewsSimplifiedFullscreenUI:disabled"/>
   <int value="-2013124655" label="EnableEphemeralFlashPermission:disabled"/>
   <int value="-2012990889" label="SpannableInlineAutocomplete:enabled"/>
@@ -41828,6 +41829,7 @@ from previous Chrome versions.
   <int value="-820041355" label="enable-transition-compositing"/>
   <int value="-816984237" label="OfflinePagesAsyncDownload:enabled"/>
   <int value="-816895294" label="DiscoverApp:disabled"/>
+  <int value="-816404462" label="TabGroupsAutoCreate:disabled"/>
   <int value="-815213125" label="SplitSettings:enabled"/>
   <int value="-814097014" label="disable-session-crashed-bubble"/>
   <int value="-813753274" label="VrBrowsing:disabled"/>