Refactor code generation to allow us to diff generic expressions and not just fields

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

+{
+  // This file specifies the fields we want to diff in the various diff functions 
+  // in ComputedStyle.
+
+  parameters: {
+    // The name parameter represents the name of the function to be created.
+
+    // The fields that need to be diffed.
+    fields: {
+    },
+
+    // A map of expressions to diff (these can be public getters of fields or 
+    // functions that use fields to determine a value).
+    // TODO: Not implemented for now.
+    map_of_expressions: {
+      default: {},
+    },

[alancutter (OOO until 2018), 2017/05/12 04:04:51]

No need to include this in this patch if it's unused.

[nainar, 2017/05/12 05:05:36]

Removed.

+
+  },
+  data: [
+    {
+        name: "ScrollAnchorDisablingPropertyChanged",
+        fields: ["margin-top", "margin-left", "margin-right", "margin-bottom", 
+                  "left", "right", "top", "bottom", "padding-top", 
+                  "padding-left", "padding-right", "padding-bottom"]
+    },
+    {
+        name: "DiffNeedsFullLayoutAndPaintInvalidation",
+        fields: ["padding-top", "padding-left", "padding-right", 
+                "padding-bottom"]
+    }
+  ],
+}