Remove the need for field_size for storage_only when type_name is bool.

Currently, all boolean storage_only fields in ComputedStyle need to
specify field_size: 1. This is kind of redundant, because it will never
be any other value.

This patch removes the need to specifiy field_size for boolean
storage_only fields.

This does not change generated code.

Bug: 628043
Change-Id: Iccba6c299847c35e3a4c2fd19d4d2f9e85e3e62d
Reviewed-on: https://chromium-review.googlesource.com/544475
Commit-Queue: Darren Shen <shend@chromium.org>
Reviewed-by: nainar <nainar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#481804}

third_party/WebKit/Source/build/scripts/make_computed_style_base.py

@@ -335,10 +335,9 @@ def _create_property_field(property_):
              "so it should not specify a field_size")
         size = int(math.ceil(math.log(len(property_['keywords']), 2)))
     elif property_['field_template'] == 'storage_only':
-        # 'storage_only' fields need to specify a size, type_name and default_value
         type_name = property_['type_name']
         default_value = property_['default_value']
-        size = property_['field_size']
+        size = 1 if type_name == 'bool' else property_['field_size']
     elif property_['field_template'] == 'external':
         type_name = property_['type_name']
         default_value = property_['default_value']

third_party/WebKit/Source/core/css/ComputedStyleExtraFields.json5

@@ -155,7 +155,6 @@
     {
       name: "EmptyState",
       field_template: "storage_only",
-      field_size: 1,
       default_value: "false",
       type_name: "bool",
       custom_copy: true,
@@ -183,7 +182,6 @@
     {
       name: "HasSimpleUnderline",
       field_template: "storage_only",
-      field_size: 1,
       default_value: "false",
       type_name: "bool",
       inherited: true,
@@ -242,7 +240,6 @@
       name: "HasAutoClip",
       field_template: "storage_only",
       type_name: "bool",
-      field_size: 1,
       default_value: "true",
       field_group: "visual",
     },
@@ -250,7 +247,6 @@
       name: "HasAutoZIndex",
       field_template: "storage_only",
       type_name: "bool",
-      field_size: 1,
       field_group: "box",
       default_value: "true",
     },
@@ -349,7 +345,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "true",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -358,7 +353,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "true",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -367,7 +361,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "true",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -376,7 +369,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "false",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -385,7 +377,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "true",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -394,7 +385,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "true",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -403,7 +393,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "true",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -412,7 +401,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "true",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -421,7 +409,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "false",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -430,7 +417,6 @@
       field_template: "storage_only",
       type_name: "bool",
       default_value: "true",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -495,7 +481,6 @@
       field_template: "primitive",
       type_name: "bool",
       default_value: "false",
-      field_size: 1,
       field_group: "rare-inherited",
     },
     {
@@ -865,7 +850,6 @@
       type_name: "bool",
       field_group: "rare-non-inherited->multi-col",
       default_value: "true",
-      field_size: 1,
     },
     {
       name: "ColumnAutoCount",
@@ -873,7 +857,6 @@
       type_name: "bool",
       field_group: "rare-non-inherited->multi-col",
       default_value: "true",
-      field_size: 1,
     },
     {
       name: "ColumnNormalGap",
@@ -881,7 +864,6 @@
       type_name: "bool",
       field_group: "rare-non-inherited->multi-col",
       default_value: "true",
-      field_size: 1,
     },
     {
       name: "TransformOperations",