Make elevation icon size correct in different DPI settings

chrome/browser/ui/views/elevation_icon_setter.cc

Index: chrome/browser/ui/views/elevation_icon_setter.cc
diff --git a/chrome/browser/ui/views/elevation_icon_setter.cc b/chrome/browser/ui/views/elevation_icon_setter.cc
index 99912883269f0eaf945133d24f2ba5d8491f0759..6b6c8aa25e2b3de2148e3863259f4a3daf001ede 100644
--- a/chrome/browser/ui/views/elevation_icon_setter.cc
+++ b/chrome/browser/ui/views/elevation_icon_setter.cc
@@ -14,6 +14,7 @@
 #include "base/win/win_util.h"
 #include "base/win/windows_version.h"
 #include "ui/gfx/icon_util.h"
+#include "ui/gfx/win/dpi.h"
 #endif
 
 
@@ -71,8 +72,13 @@ ElevationIconSetter::~ElevationIconSetter() {
 
 void ElevationIconSetter::SetButtonIcon(scoped_ptr<SkBitmap> icon) {
   if (icon) {
-    button_->SetImage(views::Button::STATE_NORMAL,
-                      gfx::ImageSkia::CreateFrom1xBitmap(*icon));
+    float device_scale_factor = 1.0f;
+#if defined(OS_WIN)
+    device_scale_factor = gfx::GetDPIScale();

[Peter Kasting, 2015/01/21 20:18:37]

Actually you might want a comment here like:

Windows gives us back a correctly-scaled image for the current DPI, so mark this
image as having been scaled for the current DPI already.

[xiaoling, 2015/01/21 20:23:34]

Done.

+#endif
+    button_->SetImage(
+        views::Button::STATE_NORMAL,
+        gfx::ImageSkia(gfx::ImageSkiaRep(*icon, device_scale_factor)));
     button_->SizeToPreferredSize();
     if (button_->parent())
       button_->parent()->Layout();