DevTools: Add features to collect classnames from Stylesheets and DOM

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 0d879762aa2bb74ed6a16f4dfb50de5e50f2cc24..a9b266f910ddea98cf7b0ec069cafb50f754bf6a 100644
--- a/third_party/WebKit/Source/core/inspector/browser_protocol.json
+++ b/third_party/WebKit/Source/core/inspector/browser_protocol.json
@@ -2163,6 +2163,17 @@
                 "description": "Returns the root DOM node to the caller."
             },
             {
+                "name": "collectClassNamesFromSubtree",

[pfeldman, 2016/09/09 15:55:23]

What about node ids? Will that be a separate method or should we collect them as
we traverse dom? We could name it "selectorsForAutocomplete" here and collect
#ids as well.

+                "parameters": [
+                    { "name": "nodeId", "$ref": "NodeId", "description": "Id of the node to collect class names." }
+                ],
+                "returns": [
+                    {"name": "classNames", "type": "array", "items": { "type": "string" }, "description": "Class name list." }
+                ],
+                "description": "Collects class names for the node with given id and all of it's child nodes.",
+                "experimental": true
+            },
+            {
                 "name": "requestChildNodes",
                 "parameters": [
                     { "name": "nodeId", "$ref": "NodeId", "description": "Id of the node to get children for." },
@@ -2942,6 +2953,17 @@
                 "description": "Returns the current textual content and the URL for a stylesheet."
             },
             {
+                "name": "collectClassNames",
+                "parameters": [
+                    { "name": "styleSheetId", "$ref": "StyleSheetId" }
+                ],
+                "returns": [
+                    {"name": "classNames", "type": "array", "items": { "type": "string" }, "description": "Class name list." }
+                ],
+                "description": "Returns all class names from specified stylesheet.",
+                "experimental": true
+            },
+            {
                 "name": "setStyleSheetText",
                 "parameters": [
                     { "name": "styleSheetId", "$ref": "StyleSheetId" },