Use exact pixel sizes instead of dip in webapp/WebAPK installability code

chrome/browser/manifest/manifest_icon_downloader.cc

Index: chrome/browser/manifest/manifest_icon_downloader.cc
diff --git a/chrome/browser/manifest/manifest_icon_downloader.cc b/chrome/browser/manifest/manifest_icon_downloader.cc
index 4b208cc54287eed44614c3dd740dd2c1caa4bbc0..03ed14d6398f5eae9735f032a853914beb89a848 100644
--- a/chrome/browser/manifest/manifest_icon_downloader.cc
+++ b/chrome/browser/manifest/manifest_icon_downloader.cc
@@ -49,20 +49,13 @@ void ManifestIconDownloader::DevToolsConsoleHelper::AddMessage(
 bool ManifestIconDownloader::Download(
     content::WebContents* web_contents,
     const GURL& icon_url,
-    int ideal_icon_size_in_dp,
-    int minimum_icon_size_in_dp,
+    int ideal_icon_size_in_px,
+    int minimum_icon_size_in_px,
     const ManifestIconDownloader::IconFetchCallback& callback) {
-  DCHECK(minimum_icon_size_in_dp <= ideal_icon_size_in_dp);
+  DCHECK(minimum_icon_size_in_px <= ideal_icon_size_in_px);
   if (!web_contents || !icon_url.is_valid())
     return false;
 
-  const float device_scale_factor =
-      display::Screen::GetScreen()->GetPrimaryDisplay().device_scale_factor();
-  const int ideal_icon_size_in_px =
-      static_cast<int>(round(ideal_icon_size_in_dp * device_scale_factor));
-  const int minimum_icon_size_in_px =
-      static_cast<int>(round(minimum_icon_size_in_dp * device_scale_factor));
-
   web_contents->DownloadImage(
       icon_url,
       false, // is_favicon