Bug 1345206 - Wire up bindings for @page rule. r=xidorn

Connect the Servo types and functions for working with @page rules to Gecko.

This also adjusts the Stylo test expectations to match the current state with
@page support.

MozReview-Commit-ID: 513d05m51wK

--HG--
extra : rebase_source : aa92dc1ad4b3949418759b3893a918663ec6ee0c

layout/style/ServoArcTypeList.h

@@ -17,3 +17,4 @@ SERVO_ARC_TYPE(AnimationValueMap, RawServoAnimationValueMap)
 SERVO_ARC_TYPE(MediaList, RawServoMediaList)
 SERVO_ARC_TYPE(MediaRule, RawServoMediaRule)
 SERVO_ARC_TYPE(NamespaceRule, RawServoNamespaceRule)
+SERVO_ARC_TYPE(PageRule, RawServoPageRule)

layout/style/ServoBindingList.h

@@ -95,6 +95,7 @@ SERVO_BINDING_FUNC(Servo_CssRules_DeleteRule, nsresult,
 BASIC_RULE_FUNCS(Style)
 BASIC_RULE_FUNCS(Media)
 BASIC_RULE_FUNCS(Namespace)
+BASIC_RULE_FUNCS(Page)
 #undef BASIC_RULE_FUNCS
 SERVO_BINDING_FUNC(Servo_CssRules_GetFontFaceRuleAt, nsCSSFontFaceRule*,
                    ServoCssRulesBorrowed rules, uint32_t index)
@@ -113,6 +114,11 @@ SERVO_BINDING_FUNC(Servo_NamespaceRule_GetPrefix, nsIAtom*,
                    RawServoNamespaceRuleBorrowed rule)
 SERVO_BINDING_FUNC(Servo_NamespaceRule_GetURI, nsIAtom*,
                    RawServoNamespaceRuleBorrowed rule)
+SERVO_BINDING_FUNC(Servo_PageRule_GetStyle, RawServoDeclarationBlockStrong,
+                   RawServoPageRuleBorrowed rule)
+SERVO_BINDING_FUNC(Servo_PageRule_SetStyle, void,
+                   RawServoPageRuleBorrowed rule,
+                   RawServoDeclarationBlockBorrowed declarations)
 
 // Animations API
 SERVO_BINDING_FUNC(Servo_ParseProperty,

layout/style/ServoCSSRuleList.cpp

@@ -12,6 +12,7 @@
 #include "mozilla/ServoStyleRule.h"
 #include "mozilla/ServoMediaRule.h"
 #include "mozilla/ServoNamespaceRule.h"
+#include "mozilla/ServoPageRule.h"
 
 namespace mozilla {
 
@@ -87,6 +88,7 @@ ServoCSSRuleList::GetRule(uint32_t aIndex)
       CASE_RULE(STYLE, Style)
       CASE_RULE(MEDIA, Media)
       CASE_RULE(NAMESPACE, Namespace)
+      CASE_RULE(PAGE, Page)
 #undef CASE_RULE
       case nsIDOMCSSRule::FONT_FACE_RULE: {
         // Returns a borrowed nsCSSFontFaceRule object directly, so we

layout/style/test/stylo-failures.md

@@ -68,6 +68,7 @@ to mochitest command.
   * @keyframes
     * test_keyframes_rules.html [1]
     * test_rules_out_of_sheets.html [1]
+    * test_bug887741_at-rules_in_declaration_lists.html `rules[2]` [1]
   * @support
     * test_supports_rules.html [1]
 * test_box_size_keywords.html: moz-prefixed intrinsic size keyword value [64]
@@ -243,10 +244,8 @@ to mochitest command.
     * ... `justify-` [6]
     * test_value_storage.html `align-` [9]
     * ... `justify-` [14]
-* @page support
-  * test_bug887741_at-rules_in_declaration_lists.html [1]
-  * test_page_parser.html [30]
-  * test_rule_insertion.html `@page` [4]
+* @page should ignore properties with viewport units bug 1353191
+  * test_page_parser.html `2v` [8]
 * Stylesheet cloning is somehow busted bug 1348481
   * test_selectors.html `cloned correctly` [157]
   * ... `matched clone` [204]
@@ -396,6 +395,8 @@ to mochitest command.
 * Unit should be preserved after parsing servo/servo#15346
   * test_units_length.html [5]
   * test_units_time.html [1]
+  * test_page_parser.html `192px` [8]
+  * test_bug887741_at-rules_in_declaration_lists.html `188.96666px` [1]
 * insertRule / deleteRule don't work bug 1336863
   * test_rule_insertion.html [5]
 * @-moz-document support