chromium/ios/chrome/open_extension/resources/Assets.xcassets/ExtensionIcon.appiconset/Contents.json

{
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            "idiom" : "universal",
            "platform" : "ios",
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            "size" : "20x20"
          },
          {
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            "idiom" : "universal",
            "platform" : "ios",
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          },
          {
            "filename" : "monochrome_logo_29_2x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "2x",
            "size" : "29x29"
          },
          {
            "filename" : "monochrome_logo_29_3x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "3x",
            "size" : "29x29"
          },
          {
            "filename" : "monochrome_logo_38_2x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "2x",
            "size" : "38x38"
          },
          {
            "filename" : "monochrome_logo_38_3x.png",
            "idiom" : "universal",
            "platform" : "ios",
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          },
          {
            "filename" : "monochrome_logo_40_2x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "2x",
            "size" : "40x40"
          },
          {
            "filename" : "monochrome_logo_40_3x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "3x",
            "size" : "40x40"
          },
          {
            "filename" : "monochrome_logo_60_2x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "2x",
            "size" : "60x60"
          },
          {
            "filename" : "monochrome_logo_60_3x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "3x",
            "size" : "60x60"
          },
          {
            "filename" : "monochrome_logo_64_2x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "2x",
            "size" : "64x64"
          },
          {
            "filename" : "monochrome_logo_64_3x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "3x",
            "size" : "64x64"
          },
          {
            "filename" : "monochrome_logo_68_2x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "2x",
            "size" : "68x68"
          },
          {
            "filename" : "monochrome_logo_76_2x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "2x",
            "size" : "76x76"
          },
          {
            "filename" : "monochrome_logo_83.5_2x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "scale" : "2x",
            "size" : "83.5x83.5"
          },
          {
            "filename" : "monochrome_logo_1024_1x.png",
            "idiom" : "universal",
            "platform" : "ios",
            "size" : "1024x1024"
          }
    ],
    "info": {
        "version": 1,
        "author": "xcode"
    }
}