DevTools: Add new DocumentationURLProvider sources and some tests for documentation

Source/devtools/front_end/documentation/JSArticle.js

Index: Source/devtools/front_end/documentation/JSArticle.js
diff --git a/Source/devtools/front_end/documentation/JSArticle.js b/Source/devtools/front_end/documentation/JSArticle.js
index ebaf79855a6285a00eacd5ce85b93062a547ef02..30eebff4fa4dde4baadbc743ecdd9f111ce382a2 100644
--- a/Source/devtools/front_end/documentation/JSArticle.js
+++ b/Source/devtools/front_end/documentation/JSArticle.js
@@ -37,8 +37,10 @@ WebInspector.JSArticle.parse = function(wikiMarkupText)
         article.summary = from["Summary_Section"];
     if (typeof from["API_Object_Method"] !== "undefined")
         article.methods = from["API_Object_Method"];
-    if (typeof from["Remarks_Section"] !== "undefined")
-        article.remarks = from["Remarks_Section"];
+    if (typeof from["Remarks_Section"] !== "undefined" && typeof from["Remarks_Section"]["Remarks"] !== "undefined")

[lushnikov, 2014/08/11 09:42:49]

For clarity:

if (from["Remarks_Section"] && typeof from["Remarks_Section"]["Remarks"] ===
"string")

[iliia, 2014/08/11 12:17:53]

Done.

+        article.remarks = from["Remarks_Section"]["Remarks"];
+    if (typeof from["Examples_Section"] !== "undefined" && typeof from["Examples_Section"]["Examples"] !== "undefined")
+        article.examples = from["Examples_Section"]["Examples"];
 
     return article;
 }