DevTools: support uiLocationToRawLocations for CSS

third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js

Index: third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js b/third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js
index 626b08ccbc2180a503ef0301cf26996e011f5c43..c723c154ca598a1b19f0243a217919473d77441a 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js
@@ -357,6 +357,20 @@ SDK.TextSourceMap = class {
   }
 
   /**
+   * @param {string} sourceURL
+   * @param {number} lineNumber
+   * @param {number} columnNumber
+   * @return {?SDK.SourceMapEntry}
+   */
+  findReverseEntry(sourceURL, lineNumber, columnNumber) {

[dgozman, 2017/05/04 00:04:56]

Why this is not similar to JS? Which one is the correct one?

+    var mappings = this._reversedMappings(sourceURL);
+    var index = mappings.lowerBound(
+        [lineNumber, columnNumber],
+        (position, mapping) => position[0] - mapping.sourceLineNumber || position[1] - mapping.sourceColumnNumber);
+    return index < mappings.length ? mappings[index] : null;
+  }
+
+  /**
    * @return {!Array<!SDK.SourceMapEntry>}
    */
   mappings() {