Convert ui::ScaleFactor -> float in favicon/history code

chrome/browser/web_applications/update_shortcut_worker_win.cc

Index: chrome/browser/web_applications/update_shortcut_worker_win.cc
diff --git a/chrome/browser/web_applications/update_shortcut_worker_win.cc b/chrome/browser/web_applications/update_shortcut_worker_win.cc
index 5c6f814b836b1f9f568eb8be20691b381ace16ab..a2bb6e9874b7d998a829e792a5f6ba2f846a5019 100644
--- a/chrome/browser/web_applications/update_shortcut_worker_win.cc
+++ b/chrome/browser/web_applications/update_shortcut_worker_win.cc
@@ -102,12 +102,12 @@ void UpdateShortcutWorker::DidDownloadFavicon(
     const GURL& image_url,
     const std::vector<SkBitmap>& bitmaps,
     const std::vector<gfx::Size>& original_sizes) {
-  std::vector<ui::ScaleFactor> scale_factors;
-  scale_factors.push_back(ui::SCALE_FACTOR_100P);
+  std::vector<float> favicon_scales;
+  favicon_scales.push_back(1.0f);
 
   std::vector<size_t> closest_indices;
   SelectFaviconFrameIndices(original_sizes,
-                            scale_factors,
+                            favicon_scales,
                             requested_size,
                             &closest_indices,
                             NULL);