Bookmarks manager: Change folder icon to 16px on Mac.

This matches the raster image size and fixes blurriness on high DPI displays.

Bug: 1064806
Change-Id: I0262e6fefbe4f09ead87a9c1fbe7cd5b7a5417ba
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2360333
Auto-Submit: dpapad <dpapad@chromium.org>
Reviewed-by: John Lee <johntlee@chromium.org>
Commit-Queue: dpapad <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806930}

chrome/browser/resources/bookmarks/bookmarks_resources.grd

@@ -26,7 +26,7 @@
                use_base_dir="false" compress="false" type="BINDATA" />
       <include name="IDR_BOOKMARKS_ITEM_JS"
                file="${root_gen_dir}/chrome/browser/resources/bookmarks/item.js"
-               use_base_dir="false" compress="false" type="BINDATA" />
+               use_base_dir="false" compress="false" type="BINDATA" preprocess="true" />
       <include name="IDR_BOOKMARKS_LIST_JS"
                file="${root_gen_dir}/chrome/browser/resources/bookmarks/list.js"
                use_base_dir="false" compress="false" type="BINDATA" />

chrome/browser/resources/bookmarks/item.html

@@ -22,6 +22,12 @@
     }
   }
 
+<if expr="is_macosx">
+  .folder-icon {
+    margin: 2px;
+  }
+</if>
+
   #website-title {
     color: var(--cr-primary-text-color);
     flex: 1;

chrome/browser/resources/bookmarks/shared_style.html

@@ -51,12 +51,16 @@
 
     .folder-icon {
       content: url(chrome://theme/IDR_FOLDER_CLOSED);
-      height: 20px;
-      min-width: 20px;
-      width: 20px;
+      height: var(--folder-icon-size);
+      min-width: var(--folder-icon-size);
+      width: var(--folder-icon-size);
     }
 
 <if expr="is_macosx">
+    .folder-icon {
+      --folder-icon-size: 16px;
+    }
+
     @media (prefers-color-scheme: dark) {
       .folder-icon {
          content: url(chrome://theme/IDR_FOLDER_CLOSED_WHITE);
@@ -65,6 +69,10 @@
 </if>
 
 <if expr="not is_macosx">
+    .folder-icon {
+      --folder-icon-size: 20px;
+    }
+
     .folder-icon[open] {
       content: url(chrome://theme/IDR_FOLDER_OPEN);
     }