Gallery: Replace buttons in top toolbar with paper-button and new icons.

ui/file_manager/gallery/js/slide_mode.js

Index: ui/file_manager/gallery/js/slide_mode.js
diff --git a/ui/file_manager/gallery/js/slide_mode.js b/ui/file_manager/gallery/js/slide_mode.js
index 657bb853b615c84bdb9e75c1fc59702059fa132c..35a4301398d1ea5de95df3c017842315683d5d22 100644
--- a/ui/file_manager/gallery/js/slide_mode.js
+++ b/ui/file_manager/gallery/js/slide_mode.js
@@ -341,8 +341,7 @@ function SlideMode(container, content, topToolbar, bottomToolbar, prompt,
    * @const
    */
   var slideShowButton = queryRequiredElement(this.topToolbar_,
-      'button.slideshow');
-  slideShowButton.title = this.displayStringFunction_('GALLERY_SLIDESHOW');
+      '.button.slideshow');
   slideShowButton.addEventListener('click',
       this.startSlideshow.bind(this, SlideMode.SLIDESHOW_INTERVAL_FIRST));
 
@@ -363,9 +362,7 @@ function SlideMode(container, content, topToolbar, bottomToolbar, prompt,
    * @private
    * @const
    */
-  this.editButton_ = queryRequiredElement(this.topToolbar_, 'button.edit');
-  this.editButton_.title = this.displayStringFunction_('GALLERY_EDIT');
-  this.editButton_.disabled = true;  // Disabled by default.
+  this.editButton_ = queryRequiredElement(this.topToolbar_, '.button.edit');
   this.editButton_.addEventListener('click', this.toggleEditor.bind(this));
 
   /**
@@ -373,9 +370,7 @@ function SlideMode(container, content, topToolbar, bottomToolbar, prompt,
    * @private
    * @const
    */
-  this.printButton_ = queryRequiredElement(this.topToolbar_, 'button.print');
-  this.printButton_.title = this.displayStringFunction_('GALLERY_PRINT');
-  this.printButton_.disabled = true;  // Disabled by default.
+  this.printButton_ = queryRequiredElement(this.topToolbar_, '.button.print');
   this.printButton_.addEventListener('click', this.print_.bind(this));
 
   /**