Rejigger ThemeService: move exposure of ThemeProvider interface to a

ui/base/theme_provider.h

Index: ui/base/theme_provider.h
diff --git a/ui/base/theme_provider.h b/ui/base/theme_provider.h
index eeab83d796cec946111e04a1a112a835362bbe46..113a3ac83313014400b6319616e9a3ead0e464d5 100644
--- a/ui/base/theme_provider.h
+++ b/ui/base/theme_provider.h
@@ -47,10 +47,6 @@ class UI_BASE_EXPORT ThemeProvider {
  public:
   virtual ~ThemeProvider();
 
-  // Whether we're using the system theme (which may or may not be the
-  // same as the default theme).
-  virtual bool UsingSystemTheme() const = 0;
-
   // Get the image specified by |id|. An implementation of ThemeProvider should
   // have its own source of ids (e.g. an enum, or external resource bundle).
   virtual gfx::ImageSkia* GetImageSkiaNamed(int id) const = 0;
@@ -78,6 +74,11 @@ class UI_BASE_EXPORT ThemeProvider {
       ui::ScaleFactor scale_factor) const = 0;
 
 #if defined(OS_MACOSX)
+  // Whether we're using the system theme (which may or may not be the
+  // same as the default theme). TODO(estade): this should probably just be part

[pkotwicz, 2015/12/04 23:16:50]

Nit: TODO on new line

[Evan Stade, 2015/12/09 00:57:11]

Done.

+  // of ThemeService and not ThemeProvider, but it's used in many places on OSX.
+  virtual bool UsingSystemTheme() const = 0;
+
   // Gets the NSImage with the specified |id|.
   virtual NSImage* GetNSImageNamed(int id) const = 0;