Remove DateInputInlineBlock flag

This has been enabled by default for long enough that we can remove the
flag now.

Bug: 41462748
Change-Id: I54d644c6b49a33da0a3046dcee101c0eed9fcd5b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5515549
Reviewed-by: Kent Tamura <tkent@chromium.org>
Commit-Queue: Joey Arhar <jarhar@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1297164}

third_party/blink/public/blink_resources.grd

@@ -20,7 +20,6 @@
       </if>
       <include name="IDR_UASTYLE_PERMISSION_ELEMENT_CSS" file="../renderer/core/html/resources/permission.css" flattenhtml="true" type="BINDATA" compress="brotli"/>
       <include name="IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_CSS" file="../renderer/core/html/resources/input_multiple_fields.css" type="BINDATA" compress="brotli"/>
-      <include name="IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_INLINE_FLEX_CSS" file="../renderer/core/html/resources/input_multiple_fields_inline_flex.css" type="BINDATA" compress="brotli"/>
       <include name="IDR_UASTYLE_THEME_FORCED_COLORS_CSS" file="../renderer/core/html/resources/forced_colors.css" type="BINDATA" compress="brotli"/>
       <include name="IDR_UASTYLE_SELECTLIST_CSS" file="../renderer/core/html/resources/selectlist.css" flattenhtml="true" type="BINDATA" compress="brotli"/>
       <include name="IDR_UASTYLE_STYLABLE_SELECT_CSS" file="../renderer/core/html/resources/stylable_select.css" type="BINDATA" compress="brotli"/>

third_party/blink/renderer/core/html/forms/input_type_view.cc

@@ -97,8 +97,7 @@ HTMLFormElement* InputTypeView::FormForSubmission() const {
 LayoutObject* InputTypeView::CreateLayoutObject(
     const ComputedStyle& style) const {
   // Avoid LayoutInline, which can be split to multiple lines.
-  if (RuntimeEnabledFeatures::DateInputInlineBlockEnabled() &&
-      style.IsDisplayInlineType() && !style.IsDisplayReplacedType()) {
+  if (style.IsDisplayInlineType() && !style.IsDisplayReplacedType()) {
     return MakeGarbageCollected<LayoutNGBlockFlow>(&GetElement());
   }
   return LayoutObject::CreateObject(&GetElement(), style);

third_party/blink/renderer/core/html/forms/multiple_fields_temporal_input_type_view.cc

@@ -396,19 +396,7 @@ void MultipleFieldsTemporalInputTypeView::Blur() {
 
 void MultipleFieldsTemporalInputTypeView::AdjustStyle(
     ComputedStyleBuilder& builder) {
-  if (!RuntimeEnabledFeatures::DateInputInlineBlockEnabled()) {
-    EDisplay original_display = builder.Display();
-    EDisplay new_display = original_display;
-    if (original_display == EDisplay::kInline ||
-        original_display == EDisplay::kInlineBlock) {
-      new_display = EDisplay::kInlineFlex;
-    } else if (original_display == EDisplay::kBlock) {
-      new_display = EDisplay::kFlex;
-    }
-    builder.SetDisplay(new_display);
-  } else {
-    builder.SetShouldIgnoreOverflowPropertyForInlineBlockBaseline();
-  }
+  builder.SetShouldIgnoreOverflowPropertyForInlineBlockBaseline();
   builder.SetDirection(ComputedTextDirection());
 }
 
@@ -418,15 +406,13 @@ void MultipleFieldsTemporalInputTypeView::CreateShadowSubtree() {
   Document& document = GetElement().GetDocument();
   ContainerNode* container = GetElement().UserAgentShadowRoot();
 
-  if (RuntimeEnabledFeatures::DateInputInlineBlockEnabled()) {
-    auto* container_div = MakeGarbageCollected<HTMLDivElement>(document);
-    container_div->SetShadowPseudoId(
-        shadow_element_names::kPseudoInternalDatetimeContainer);
-    container_div->SetInlineStyleProperty(CSSPropertyID::kUnicodeBidi,
-                                          CSSValueID::kNormal);
-    GetElement().UserAgentShadowRoot()->AppendChild(container_div);
-    container = container_div;
-  }
+  auto* container_div = MakeGarbageCollected<HTMLDivElement>(document);
+  container_div->SetShadowPseudoId(
+      shadow_element_names::kPseudoInternalDatetimeContainer);
+  container_div->SetInlineStyleProperty(CSSPropertyID::kUnicodeBidi,
+                                        CSSValueID::kNormal);
+  GetElement().UserAgentShadowRoot()->AppendChild(container_div);
+  container = container_div;
 
   container->AppendChild(
       MakeGarbageCollected<DateTimeEditElement, Document&,

third_party/blink/renderer/core/layout/layout_theme_default.cc

@@ -79,19 +79,11 @@ String LayoutThemeDefault::ExtraDefaultStyleSheet() {
           ? UncompressResourceAsASCIIString(
                 IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_CSS)
           : String();
-  String multiple_fields_inline_flex_style_sheet =
-      RuntimeEnabledFeatures::InputMultipleFieldsUIEnabled() &&
-              !RuntimeEnabledFeatures::DateInputInlineBlockEnabled()
-          ? UncompressResourceAsASCIIString(
-                IDR_UASTYLE_THEME_INPUT_MULTIPLE_FIELDS_INLINE_FLEX_CSS)
-          : String();
   StringBuilder builder;
   builder.ReserveCapacity(extra_style_sheet.length() +
-                          multiple_fields_style_sheet.length() +
-                          multiple_fields_inline_flex_style_sheet.length());
+                          multiple_fields_style_sheet.length());
   builder.Append(extra_style_sheet);
   builder.Append(multiple_fields_style_sheet);
-  builder.Append(multiple_fields_inline_flex_style_sheet);
   return builder.ToString();
 }
 

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -1106,13 +1106,6 @@
       origin_trial_allows_third_party: true,
       origin_trial_type: "deprecation",
     },
-    {
-      // Makes the default display value of date type <input> elements
-      // inline-block for cross-browser compatibility. Enabled in M122, should
-      // be safe to remove in M126.
-      name: "DateInputInlineBlock",
-      status: "stable",
-    },
     {
       // This is a killswitch for the `serializable` attribute on declarative
       // shadow roots. It should be removed in M125 (March 18, 2024) assuming

third_party/blink/web_tests/VirtualTestSuites

@@ -2180,22 +2180,6 @@
     "args": ["--disable-features=OptionElementAlwaysUseLabel"],
     "expires": "Jul 1, 2024"
   },
-  {
-    "prefix": "date-input-inline-block-disabled",
-    "owners": ["jarhar@chromium.org", "tkent@chromium.org"],
-    "platforms": ["Linux"],
-    "bases": [
-      "external/wpt/html/rendering/non-replaced-elements/form-controls/resets.html",
-      "fast/forms/suggested-value.html",
-      "fast/forms/date/date-appearance-pseudo-elements.html",
-      "fast/forms/month/month-appearance-pseudo-elements.html",
-      "fast/forms/time/time-appearance-pseudo-elements.html",
-      "fast/forms/week/week-appearance-pseudo-elements.html"
-    ],
-    "args": ["--disable-blink-features=DateInputInlineBlock",
-             "--disable-threaded-compositing", "--disable-threaded-animation"],
-    "expires": "Oct 1, 2024"
-  },
   {
     "prefix": "disable-device-id-pointer-event",
     "platforms": ["Linux", "Mac", "Win"],