DevTools: merge UISourceCode's parentPath, name, originURL and uri.

third_party/WebKit/Source/devtools/front_end/workspace/FileSystemMapping.js

Index: third_party/WebKit/Source/devtools/front_end/workspace/FileSystemMapping.js
diff --git a/third_party/WebKit/Source/devtools/front_end/workspace/FileSystemMapping.js b/third_party/WebKit/Source/devtools/front_end/workspace/FileSystemMapping.js
index c5cf47e55119068dd7b553d743277dcd3df31a0f..ce64c75a83a6d0602785e4024cb26a54c65aee9a 100644
--- a/third_party/WebKit/Source/devtools/front_end/workspace/FileSystemMapping.js
+++ b/third_party/WebKit/Source/devtools/front_end/workspace/FileSystemMapping.js
@@ -53,7 +53,6 @@ WebInspector.FileSystemMapping.prototype = {
         this._fileSystemMappings = {};
         for (var fileSystemPath in savedMapping) {
             var savedFileSystemMappings = savedMapping[fileSystemPath];
-
             this._fileSystemMappings[fileSystemPath] = [];
             var fileSystemMappings = this._fileSystemMappings[fileSystemPath];
 
@@ -209,7 +208,7 @@ WebInspector.FileSystemMapping.prototype = {
             // We are looking for the longest pathPrefix match.
             if (entry && entry.pathPrefix.length > pathPrefix.length)
                 continue;
-            if (filePath.startsWith(pathPrefix.substr(1)))
+            if (filePath.startsWith(pathPrefix))
                 entry = entries[i];
         }
         return entry;
@@ -270,10 +269,11 @@ WebInspector.FileSystemMapping.prototype = {
      */
     urlForPath: function(fileSystemPath, filePath)
     {
-        var entry = this._mappingEntryForPath(fileSystemPath, filePath);
+        var relativePath = filePath.substring("file://".length + fileSystemPath.length);
+        var entry = this._mappingEntryForPath(fileSystemPath, relativePath);
         if (!entry)
             return "";
-        return entry.urlPrefix + filePath.substring(entry.pathPrefix.length - 1);
+        return entry.urlPrefix + relativePath.substring(entry.pathPrefix.length);
     },
 
     /**