DevTools/Coverage: filter out content scripts

third_party/WebKit/Source/devtools/front_end/coverage/CoverageModel.js

 // Copyright (c) 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /** @typedef {{startOffset: number, endOffset: number, count: number}} */
 Coverage.RangeUseCount;
 
 /** @typedef {{end: number, count: (number|undefined)}} */
 Coverage.CoverageSegment;
 
@@ skipping 245 matching lines @@
    * @param {string} url
    */
   constructor(url) {
     this._url = url;
     /** @type {!Map<string, !Coverage.CoverageInfo>} */
     this._coverageInfoByLocation = new Map();
     this._size = 0;
     this._usedSize = 0;
     /** @type {!Coverage.CoverageType} */
     this._type;
+    this._isContentScript = false;
   }
 
   /**
    * @return {string}
    */
   url() {
     return this._url;
   }
 
   /**
@@ skipping 18 matching lines @@
   }
 
   /**
    * @return {number}
    */
   unusedSize() {
     return this._size - this._usedSize;
   }
 
   /**
+   * @return {boolean}
+   */
+  isContentScript() {
+    return this._isContentScript;
+  }
+
+  /**
    * @param {!Common.ContentProvider} contentProvider
    * @param {number} contentLength
    * @param {number} lineOffset
    * @param {number} columnOffset
    * @return {!Coverage.CoverageInfo}
    */
   _ensureEntry(contentProvider, contentLength, lineOffset, columnOffset) {
     var key = `${lineOffset}:${columnOffset}`;
     var entry = this._coverageInfoByLocation.get(key);
 
-    if (!entry) {
-      entry = new Coverage.CoverageInfo(contentProvider, contentLength);
-      this._coverageInfoByLocation.set(key, entry);
-      this._size += contentLength;
-      this._type |= entry.type();
-    }
+    if (entry)
+      return entry;
+
+    entry = new Coverage.CoverageInfo(contentProvider, contentLength);
+
+    if (entry.type() === Coverage.CoverageType.JavaScript && !this._coverageInfoByLocation.size)
+      this._isContentScript = /** @type {!SDK.Script} */ (contentProvider).isContentScript();
+
+    this._coverageInfoByLocation.set(key, entry);
+    this._size += contentLength;
+    this._type |= entry.type();
     return entry;
   }
 };
 
 Coverage.CoverageInfo = class {
   /**
    * @param {!Common.ContentProvider} contentProvider
    * @param {number} size
    */
   constructor(contentProvider, size) {
@@ skipping 93 matching lines @@
     this._usedSize = 0;
 
     var last = 0;
     for (var segment of this._segments) {
       if (segment.count)
         this._usedSize += segment.end - last;
       last = segment.end;
     }
   }
 };