Bug 1412486: Update bindgen. r=xidorn

Constified enums are default now. I think I want to introduce an option to
bindgen to allow setting the default enum behavior, but it doesn't need to block
this.

The ServoBindings.toml changes are somewhat hacky, but that's because of
rust-lang/rust-bindgen#1125.

Also, the fixups now need to account for whitespace, since quote generates stuff
like root :: nsString, and we don't rustfmt the bindings if there's no rustfmt
installed.

MozReview-Commit-ID: FZOvZnfYXj5

layout/style/ServoBindings.toml

@@ -111,11 +111,81 @@ bitfield-enums = [
     "nsRestyleHint",
     "OriginFlags",
 ]
-constified-enums = [
-    "UpdateAnimationsTasks",
-    "ParsingMode",
-    "ThemeWidgetType",
-    "ServoTraversalFlags",
+# FIXME: use proper namespaces and such when
+# https://github.com/rust-lang-nursery/rust-bindgen/issues/1125
+# is fixed.
+rusty-enums = [
+    "nsCompatibility",
+    "EffectCompositor_CascadeLevel",
+    "SheetType",
+    "CallerType",
+    "IterationCompositeOperation",
+    "CompositeOperation",
+    "InheritTarget",
+    "SheetParsingMode",
+    "FontFamilyType",
+    "nsStyleContentType",
+    "nsStyleSVGOpacitySource",
+    "nsStyleUnit",
+    "nsCSSKeyword",
+    "nsIDocument_DocumentTheme",
+    "nsIDocument_Type",
+    "nsCSSUnit",
+    "nsCSSPropertyID",
+    "nsCSSCounterDesc",
+    "nsMediaExpression_Range",
+    "nsMediaFeature_RangeType",
+    "nsMediaFeature_ValueType",
+    "nsresult",
+    "nsAtom_AtomKind",
+    "nsStyleImageLayers_LayerType",
+    "nsStyleImageOrientation_Angles",
+    "nsTimingFunction_Type",
+    "ServoElementSnapshotFlags",
+    "Side",
+    "PlaybackDirection",
+    "FillMode",
+    "HalfCorner",
+    "URLMatchingFunction",
+    "StyleDisplay",
+    "StyleFloatEdge",
+    "StyleShapeRadius",
+    "StyleWindowDragging",
+    "StyleOrient",
+    "StyleBoxSizing",
+    "StyleClear",
+    "StyleFloat",
+    "StyleUserModify",
+    "StyleUserInput",
+    "StyleBoxDirection",
+    "StyleTextJustify",
+    "StyleHyphens",
+    "StyleGeometryBox",
+    "StyleFillRule",
+    "StyleShapeSourceType",
+    "StyleBasicShapeType",
+    "nsStyleImageLayers_Size_DimensionType",
+    "StyleStackSizing",
+    "StyleBoxPack",
+    "StyleBoxOrient",
+    "StyleBoxAlign",
+    "StyleUserFocus",
+    "StyleUserSelect",
+    "StyleImageLayerRepeat",
+    "StyleBoxDecorationBreak",
+    "StyleRuleInclusion",
+    "StyleGridTrackBreadth",
+    "nsStyleImageType",
+    "StyleWhiteSpace",
+    "nsStyleSVGPaintType",
+    "nsStyleSVGFallbackType",
+    # ".*Style.*",
+    "nsINode_BooleanFlag",
+    "CSSPseudoElementType",
+    "CSSPseudoClassType",
+    "LookAndFeel_ColorID",
+    "LookAndFeel_FontID",
+    "MatrixTransformOperator",
 ]
 constified-enum-variants = [
     { enum = "nsCSSPropertyID", variants = ["eCSSProperty_COUNT.*"] },
@@ -272,7 +342,6 @@ whitelist-types = [
     "nsStyleVariables",
     "nsStyleVisibility",
     "nsStyleXUL",
-    "nsTArray",
     "nsTArrayHeader",
     "Position",
     "PropertyValuePair",
@@ -311,7 +380,6 @@ opaque-types = [
     # We want everything but FontVariation and Float to be opaque but we don't
     # have negative regexes.
     "mozilla::gfx::(.{0,4}|.{6,12}|.{14,}|([^F][^o][^n][^t][^V][^a][^r][^i][^a][^t][^i][^o][^n])|([^F][^l][^o][^a][^t]))",
-    "FallibleTArray",
     "mozilla::dom::Sequence",
     "mozilla::dom::Optional",
     "mozilla::dom::OwningNodeOrString_Value",
@@ -361,8 +429,8 @@ mapped-generic-types = [
     { generic = false, gecko = "ServoStyleContextStrong", servo = "::gecko_bindings::sugar::ownership::Strong<::properties::ComputedValues>" },
 ]
 fixups = [
-    { pat = "\\broot::nsString\\b", rep = "::nsstring::nsStringRepr" },
-    { pat = "\\broot::nsTString<u16>", rep = "::nsstring::nsStringRepr" },
+    { pat = "\\broot\\s*::\\s*nsString\\b", rep = "::nsstring::nsStringRepr" },
+    { pat = "\\broot\\s*::\\s*nsTString\\s*<\\s*u16\\s*>", rep = "::nsstring::nsStringRepr" },
 ]
 
 [bindings]
@@ -568,7 +636,7 @@ servo-borrow-types = [
 ]
 fixups = [
     # Remap the templated string type to the helper type
-    { pat = "\\bnsTString<u16>", rep = "nsString" },
+    { pat = "\\bnsTString\\s*<\\s*u16\\s*>", rep = "nsString" },
     # hack for gecko-owned string
-    { pat = "\\b<nsString\\b", rep = "<nsStringRepr" },
+    { pat = "<\\s*nsString\\s*", rep = "<nsStringRepr" },
 ]