Refactor the Photo Editor to enable new feature work

chrome/browser/resources/file_manager/js/media/util.js

Index: chrome/browser/resources/file_manager/js/media/util.js
diff --git a/chrome/browser/resources/file_manager/js/media/util.js b/chrome/browser/resources/file_manager/js/media/util.js
index d55a223bb1cf6b135c64712d0ca650ac9295a0db..9ebc4efed470e3899d5d182d75db6ff3fe5f266e 100644
--- a/chrome/browser/resources/file_manager/js/media/util.js
+++ b/chrome/browser/resources/file_manager/js/media/util.js
@@ -7,11 +7,14 @@
  *
  * @param {Element} container The main DOM container.
  * @param {number} opt_timeout Hide timeout in ms.
+ * @param {function():boolean=} opt_toolsActive Function that returns |true|
+ *     if the tools are active and should not be hidden.
  * @constructor
  */
-function MouseInactivityWatcher(container, opt_timeout) {
+function MouseInactivityWatcher(container, opt_timeout, opt_toolsActive) {
   this.container_ = container;
   this.timeout_ = opt_timeout || MouseInactivityWatcher.DEFAULT_TIMEOUT;
+  this.toolsActive_ = opt_toolsActive || function() { return false };
 
   this.onTimeoutBound_ = this.onTimeout_.bind(this);
   this.timeoutID_ = null;
@@ -62,7 +65,7 @@ MouseInactivityWatcher.prototype.startActivity = function() {
  * @param {number} opt_timeout Timeout.
  */
 MouseInactivityWatcher.prototype.stopActivity = function(opt_timeout) {
-  if (this.mouseOverTool_)
+  if (this.mouseOverTool_ || this.toolsActive_())
     return;
 
   if (this.timeoutID_)
@@ -106,5 +109,6 @@ MouseInactivityWatcher.prototype.onMouseMove_ = function(e) {
  */
 MouseInactivityWatcher.prototype.onTimeout_ = function() {
   this.timeoutID_ = null;
-  this.showTools(false);
+  if (!this.toolsActive_())
+    this.showTools(false);
 };