gfx: Add an implicit Insets to InsetsF conversion operator.

BUG=none
R=danakj@chromium.org

Review URL: https://codereview.chromium.org/102253009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243131 0039d316-1c4b-4281-b951-d872f2087c98

ui/gfx/geometry/insets.h

@@ -9,6 +9,7 @@
 
 #include "build/build_config.h"
 #include "ui/gfx/geometry/insets_base.h"
+#include "ui/gfx/geometry/insets_f.h"
 #include "ui/gfx/gfx_export.h"
 
 #if defined(TOOLKIT_GTK)
@@ -39,6 +40,10 @@ class GFX_EXPORT Insets : public InsetsBase<Insets, int> {
                   static_cast<int>(right() * x_scale));
   }
 
+  operator InsetsF() const {
+    return InsetsF(top(), left(), bottom(), right());
+  }
+
   // Returns a string representation of the insets.
   std::string ToString() const;
 };