Fixed css for selected buttons in Files.app's photo editor.

chrome/browser/resources/file_manager/css/gallery.css

Index: chrome/browser/resources/file_manager/css/gallery.css
diff --git a/chrome/browser/resources/file_manager/css/gallery.css b/chrome/browser/resources/file_manager/css/gallery.css
index 8f6239f29ce286f1823e03d9b8cf8b9d064809e4..c4ba2eae0d6604736fe13ae00ca796dd57857096 100644
--- a/chrome/browser/resources/file_manager/css/gallery.css
+++ b/chrome/browser/resources/file_manager/css/gallery.css
@@ -576,6 +576,7 @@ body {
     url('../images/gallery/2x/icon_autofix.png') 2x);
 }
 
+.gallery > .toolbar button.autofix:active,
 .gallery > .toolbar button.autofix[pressed] {
   background-image: -webkit-image-set(
     url('../images/gallery/icon_autofix_selected.png') 1x,
@@ -588,6 +589,7 @@ body {
     url('../images/gallery/2x/icon_crop.png') 2x);
 }
 
+.gallery > .toolbar button.crop:active,
 .gallery > .toolbar button.crop[pressed] {
   background-image:  -webkit-image-set(
     url('../images/gallery/icon_crop_selected.png') 1x,
@@ -600,6 +602,7 @@ body {
     url('../images/gallery/2x/icon_brightness.png') 2x);
 }
 
+.gallery > .toolbar button.exposure:active,
 .gallery > .toolbar button.exposure[pressed] {
   background-image: -webkit-image-set(
     url('../images/gallery/icon_brightness_selected.png') 1x,
@@ -612,6 +615,7 @@ body {
     url('../images/gallery/2x/icon_rotate.png') 2x);
 }
 
+.gallery > .toolbar button.rotate_right:active,
 .gallery > .toolbar button.rotate_right[pressed] {
   background-image: -webkit-image-set(
     url('../images/gallery/icon_rotate_selected.png') 1x,
@@ -624,6 +628,7 @@ body {
     url('../images/gallery/2x/icon_rotate_left.png') 2x);
 }
 
+.gallery > .toolbar button.rotate_left:active,
 .gallery > .toolbar button.rotate_left[pressed] {
   background-image: -webkit-image-set(
     url('../images/gallery/icon_rotate_left_selected.png') 1x,