Moving the contents of chrome://gpu Profiling to chrome://tracing.

chrome/browser/resources/tracing/timeline_track.js

 // Copyright (c) 2011 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.
 
 
 /**
  * @fileoverview Renders an array of slices into the provided div,
  * using a child canvas element. Uses a FastRectRenderer to draw only
  * the visible slices.
  */
-cr.define('gpu', function() {
+cr.define('tracing', function() {
 
   const palletteBase = [
     {r: 138, g: 113, b: 152},
     {r: 175, g: 112, b: 133},
     {r: 127, g: 135, b: 225},
     {r: 93, g: 81, b: 137},
     {r: 116, g: 143, b: 119},
     {r: 178, g: 214, b: 122},
     {r: 87, g: 109, b: 147},
     {r: 119, g: 155, b: 95},
@@ skipping 255 matching lines @@
         }
         ctx.strokeStyle = 'rgba(255,0,0,0.25)';
         ctx.stroke();
       }
 
       // begin rendering in world space
       ctx.save();
       vp.applyTransformToCanavs(ctx);
 
       // tracks
-      var tr = new gpu.FastRectRenderer(ctx, viewLWorld, 2 * pixWidth,
-                                        2 * pixWidth, viewRWorld, pallette);
+      var tr = new tracing.FastRectRenderer(ctx, viewLWorld, 2 * pixWidth,
+                                            2 * pixWidth, viewRWorld, pallette);
       tr.setYandH(0, canvasH);
       var slices = this.slices_;
       for (var i = 0; i < slices.length; ++i) {
         var slice = slices[i];
         var x = slice.start;
         // Less than 0.001 causes short events to disappear when zoomed in.
         var w = Math.max(slice.duration, 0.001);
         var colorId;
         colorId = slice.selected ?
             slice.colorId + selectedIdBoost :
@@ skipping 61 matching lines @@
      * @param {number} wY Y location to search at, in offset space.
      *     offset space.
      * @param {function():*} onHitCallback Callback to call with the slice,
      *     if one is found.
      * @return {boolean} true if a slice was found, otherwise false.
      */
     pick: function(wX, wY, onHitCallback) {
       var clientRect = this.getBoundingClientRect();
       if (wY < clientRect.top || wY >= clientRect.bottom)
         return false;
-      var x = gpu.findLowIndexInSortedIntervals(this.slices_,
+      var x = tracing.findLowIndexInSortedIntervals(this.slices_,
           function(x) { return x.start; },
           function(x) { return x.duration; },
           wX);
       if (x >= 0 && x < this.slices_.length) {
         onHitCallback('slice', this, this.slices_[x]);
         return true;
       }
       return false;
     },
 
@@ skipping 14 matching lines @@
       var clientRect = this.getBoundingClientRect();
       var a = Math.max(loY, clientRect.top);
       var b = Math.min(hiY, clientRect.bottom);
       if (a > b)
         return;
 
       var that = this;
       function onPickHit(slice) {
         onHitCallback('slice', that, slice);
       }
-      gpu.iterateOverIntersectingIntervals(this.slices_,
+      tracing.iterateOverIntersectingIntervals(this.slices_,
           function(x) { return x.start; },
           function(x) { return x.duration; },
           loWX, hiWX,
           onPickHit);
     },
 
     /**
      * Find the index for the given slice.
      * @return {index} Index of the given slice, or undefined.
      * @private
@@ skipping 41 matching lines @@
       return index != undefined ? this.slices_[index] : undefined;
     },
 
   };
 
   return {
     TimelineSliceTrack: TimelineSliceTrack,
     TimelineThreadTrack: TimelineThreadTrack
   };
 });