Use Brave branded icons for Bookmarks manager

[srirambv]

Description

Match the icons added for Bookmarks Toolbar here:
brave/brave-core#10037

For more info, see https://www.figma.com/file/sS3l8tqUFxt54MEiBTalUI/?node-id=9%3A5824

Should look like this:

Original issue description

Use Brave branded icons for history. More info here #6013 (comment)

Miscellaneous Information:

[lukemulks]

I suspect this is the correct issue to post this - I'm observing a folder icon in brave://bookmarks in the left panel that appears a bit out of place. Would expect to see an icon that matches the Bookmarks icon at the top of the Bookmarks page.

Brave | 1.4.50 Chromium: 79.0.3945.88 (Official Build) dev (64-bit)
-- | --
Revision | c2a58a36b9411c80829b4b154bfcab97e581f1f3-refs/branch-heads/3945@{#954}
OS | Linux

I'm on Fedora 31

[rebron]

cc: @karenkliu

[karenkliu]

This is our own bookmarks folder icon:

It replaces the Chrome bookmarks folder icon in the browser toolbar and on chrome://bookmarks/

Icon asset:
bookmark folder icon.zip

Also, is this issue related to #6013?

[simonhong]

@karenkliu, Below images are needed for bookmark folder.

• Win - 16x16 (and 32x32) folder open/closed png like chromium's
  

• Mac - 16x16 (and 32x32) folder/folder_white png like chromium's
  

• Linux - 19x18 (and 38x36) folder/folder_closed png

Note - Upstream mac only uses closed image. Others are uses open/closed images. If we want to use closed for all cases, it's fine.

[karenkliu]

Hi @simonhong, here is the direct link to our bookmarks icon in Figma where you can export it as a PNG in all the needed sizes: https://www.figma.com/file/xWGBM3qWbu3RLuZqZGwynk/Icons?node-id=124%3A10713
DM me if you have trouble accessing it or exporting. Using a closed image for all cases is fine.

[simonhong]

This issue needs more changes and efforts than expected because upstream on window and linux don't use different images for folder open/closed. They use same yellow colored folder images for dark/light theme.
However, we need to use different images for dark/light theme because our default folder icon looks dark in dark theme.