Move StatTimer from src/shared/util.js to src/display/dom_utils.js

Since the `StatTimer` is not used in the worker, duplicating this code on both the main and worker sides seem completely unnecessary.

src/display/api.js

@@ -15,15 +15,14 @@
 /* globals requirejs, __non_webpack_require__ */
 
 import {
-  assert, createPromiseCapability, getVerbosityLevel, info,
-  InvalidPDFException, isArrayBuffer, isSameOrigin, loadJpegStream,
-  MessageHandler, MissingPDFException, NativeImageDecoding, PageViewport,
-  PasswordException, StatTimer, stringToBytes, UnexpectedResponseException,
-  UnknownErrorException, Util, warn
+  assert, createPromiseCapability, getVerbosityLevel, info, InvalidPDFException,
+  isArrayBuffer, isSameOrigin, loadJpegStream, MessageHandler,
+  MissingPDFException, NativeImageDecoding, PageViewport, PasswordException,
+  stringToBytes, UnexpectedResponseException, UnknownErrorException, Util, warn
 } from '../shared/util';
 import {
   DOMCanvasFactory, DOMCMapReaderFactory, getDefaultSetting,
-  RenderingCancelledException
+  RenderingCancelledException, StatTimer
 } from './dom_utils';
 import { FontFaceObject, FontLoader } from './font_loader';
 import { CanvasGraphics } from './canvas';

src/display/dom_utils.js

@@ -461,6 +461,66 @@ function isExternalLinkTargetSet() {
   }
 }
 
+var StatTimer = (function StatTimerClosure() {
+  function rpad(str, pad, length) {
+    while (str.length < length) {
+      str += pad;
+    }
+    return str;
+  }
+  function StatTimer() {
+    this.started = Object.create(null);
+    this.times = [];
+    this.enabled = true;
+  }
+  StatTimer.prototype = {
+    time: function StatTimer_time(name) {
+      if (!this.enabled) {
+        return;
+      }
+      if (name in this.started) {
+        warn('Timer is already running for ' + name);
+      }
+      this.started[name] = Date.now();
+    },
+    timeEnd: function StatTimer_timeEnd(name) {
+      if (!this.enabled) {
+        return;
+      }
+      if (!(name in this.started)) {
+        warn('Timer has not been started for ' + name);
+      }
+      this.times.push({
+        'name': name,
+        'start': this.started[name],
+        'end': Date.now(),
+      });
+      // Remove timer from started so it can be called again.
+      delete this.started[name];
+    },
+    toString: function StatTimer_toString() {
+      var i, ii;
+      var times = this.times;
+      var out = '';
+      // Find the longest name for padding purposes.
+      var longest = 0;
+      for (i = 0, ii = times.length; i < ii; ++i) {
+        var name = times[i]['name'];
+        if (name.length > longest) {
+          longest = name.length;
+        }
+      }
+      for (i = 0, ii = times.length; i < ii; ++i) {
+        var span = times[i];
+        var duration = span.end - span.start;
+        out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n';
+      }
+      return out;
+    },
+  };
+  return StatTimer;
+})();
+
 export {
   CustomStyle,
   RenderingCancelledException,
@@ -474,4 +534,5 @@ export {
   DOMCMapReaderFactory,
   DOMSVGFactory,
   SimpleXMLParser,
+  StatTimer,
 };

src/pdf.js

@@ -73,4 +73,4 @@ exports.RenderingCancelledException =
   pdfjsDisplayDOMUtils.RenderingCancelledException;
 exports.getFilenameFromUrl = pdfjsDisplayDOMUtils.getFilenameFromUrl;
 exports.addLinkAttributes = pdfjsDisplayDOMUtils.addLinkAttributes;
-exports.StatTimer = pdfjsSharedUtil.StatTimer;
+exports.StatTimer = pdfjsDisplayDOMUtils.StatTimer;

src/shared/util.js

@@ -1118,66 +1118,6 @@ function createPromiseCapability() {
   return capability;
 }
 
-var StatTimer = (function StatTimerClosure() {
-  function rpad(str, pad, length) {
-    while (str.length < length) {
-      str += pad;
-    }
-    return str;
-  }
-  function StatTimer() {
-    this.started = Object.create(null);
-    this.times = [];
-    this.enabled = true;
-  }
-  StatTimer.prototype = {
-    time: function StatTimer_time(name) {
-      if (!this.enabled) {
-        return;
-      }
-      if (name in this.started) {
-        warn('Timer is already running for ' + name);
-      }
-      this.started[name] = Date.now();
-    },
-    timeEnd: function StatTimer_timeEnd(name) {
-      if (!this.enabled) {
-        return;
-      }
-      if (!(name in this.started)) {
-        warn('Timer has not been started for ' + name);
-      }
-      this.times.push({
-        'name': name,
-        'start': this.started[name],
-        'end': Date.now(),
-      });
-      // Remove timer from started so it can be called again.
-      delete this.started[name];
-    },
-    toString: function StatTimer_toString() {
-      var i, ii;
-      var times = this.times;
-      var out = '';
-      // Find the longest name for padding purposes.
-      var longest = 0;
-      for (i = 0, ii = times.length; i < ii; ++i) {
-        var name = times[i]['name'];
-        if (name.length > longest) {
-          longest = name.length;
-        }
-      }
-      for (i = 0, ii = times.length; i < ii; ++i) {
-        var span = times[i];
-        var duration = span.end - span.start;
-        out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n';
-      }
-      return out;
-    },
-  };
-  return StatTimer;
-})();
-
 var createBlob = function createBlob(data, contentType) {
   if (typeof Blob !== 'undefined') {
     return new Blob([data], { type: contentType, });
@@ -1668,7 +1608,6 @@ export {
   PageViewport,
   PasswordException,
   PasswordResponses,
-  StatTimer,
   StreamType,
   TextRenderingMode,
   UnexpectedResponseException,