Ensure that favicons always have 1x representation regardless of whether the platform supports it

chrome/browser/extensions/extension_install_prompt.cc

Index: chrome/browser/extensions/extension_install_prompt.cc
diff --git a/chrome/browser/extensions/extension_install_prompt.cc b/chrome/browser/extensions/extension_install_prompt.cc
index f38287f21d1b2d3d0e32bdb0c56c36189ace8c70..5ebf4e32cce3aee14ee57373c00e9e5b3f09ef1e 100644
--- a/chrome/browser/extensions/extension_install_prompt.cc
+++ b/chrome/browser/extensions/extension_install_prompt.cc
@@ -105,26 +105,16 @@ const int kIconSize = 69;
 // Returns pixel size under maximal scale factor for the icon whose device
 // independent size is |size_in_dip|
 int GetSizeForMaxScaleFactor(int size_in_dip) {
-  std::vector<ui::ScaleFactor> supported_scale_factors =
-      ui::GetSupportedScaleFactors();
-  // Scale factors are in ascending order, so the last one is the one we need.
-  ui::ScaleFactor max_scale_factor = supported_scale_factors.back();
-  float max_scale_factor_scale = ui::GetScaleFactorScale(max_scale_factor);
-
+  float max_scale_factor_scale =
+      ui::GetScaleFactorScale(ui::GetMaxScaleFactor());
   return static_cast<int>(size_in_dip * max_scale_factor_scale);
 }
 
 // Returns bitmap for the default icon with size equal to the default icon's
 // pixel size under maximal supported scale factor.
 SkBitmap GetDefaultIconBitmapForMaxScaleFactor(bool is_app) {
-  std::vector<ui::ScaleFactor> supported_scale_factors =
-      ui::GetSupportedScaleFactors();
-  // Scale factors are in ascending order, so the last one is the one we need.
-  ui::ScaleFactor max_scale_factor =
-      supported_scale_factors[supported_scale_factors.size() - 1];
-
   return Extension::GetDefaultIcon(is_app).
-      GetRepresentation(max_scale_factor).sk_bitmap();
+      GetRepresentation(ui::GetMaxScaleFactor()).sk_bitmap();
 }
 
 // If auto confirm is enabled then posts a task to proceed with or cancel the