Finish implementation and tests of 5 ARIA 1.1 attributes.

third_party/WebKit/Source/core/inspector/browser_protocol.json

Index: third_party/WebKit/Source/core/inspector/browser_protocol.json
diff --git a/third_party/WebKit/Source/core/inspector/browser_protocol.json b/third_party/WebKit/Source/core/inspector/browser_protocol.json
index 8c02d78c3780558feed84f98051937a7f1431215..38444c934a5745cf3e4c366c156e977c0f98321e 100644
--- a/third_party/WebKit/Source/core/inspector/browser_protocol.json
+++ b/third_party/WebKit/Source/core/inspector/browser_protocol.json
@@ -4281,19 +4281,19 @@
             {
                 "id": "AXWidgetAttributes",
                 "type": "string",
-                "enum": [ "autocomplete", "haspopup", "level", "multiselectable", "orientation", "multiline", "readonly", "required", "valuemin", "valuemax", "valuetext" ],
+                "enum": [ "autocomplete", "haspopup", "keyshortcuts", "level", "multiselectable", "orientation", "multiline", "readonly", "required", "roledescription", "valuemin", "valuemax", "valuetext" ],
                 "description": "Attributes which apply to widgets."
             },
             {
                 "id": "AXWidgetStates",
                 "type": "string",
-                "enum": [ "checked", "expanded", "pressed", "selected" ],
+                "enum": [ "checked", "expanded", "modal", "pressed", "selected" ],
                 "description": "States which apply to widgets."
             },
             {
                 "id": "AXRelationshipAttributes",
                 "type": "string",
-                "enum": [ "activedescendant", "flowto", "controls", "describedby", "labelledby", "owns" ],
+                "enum": [ "activedescendant", "controls", "describedby", "details", "errormessage", "flowto", "labelledby", "owns" ],
                 "description": "Relationships between elements other than parent/child/sibling."
             },
             {