Add textfield internal padding from FocusableBorder.

ui/views/controls/focusable_border.cc

Index: ui/views/controls/focusable_border.cc
diff --git a/ui/views/controls/focusable_border.cc b/ui/views/controls/focusable_border.cc
index 9789ed50767b0b3a925cc633f008b0690e62b089..94e24fe34ef39aad76d8e64ea54c1534cc2ef3ac 100644
--- a/ui/views/controls/focusable_border.cc
+++ b/ui/views/controls/focusable_border.cc
@@ -11,11 +11,12 @@
 
 namespace {
 
-// Define the size of the insets
+// The size of the insets and the stroke.
 const int kTopInsetSize = 4;
 const int kLeftInsetSize = 4;
 const int kBottomInsetSize = 4;
 const int kRightInsetSize = 4;
+const int kStrokeWidth = 2;
 
 }  // namespace
 
@@ -50,7 +51,7 @@ void FocusableBorder::Paint(const View& view, gfx::Canvas* canvas) {
   }
 
   paint.setColor(color);
-  paint.setStrokeWidth(SkIntToScalar(2));
+  paint.setStrokeWidth(SkIntToScalar(kStrokeWidth));
 
   canvas->DrawPath(path, paint);
 }
@@ -60,7 +61,7 @@ gfx::Insets FocusableBorder::GetInsets() const {
 }
 
 gfx::Size FocusableBorder::GetMinimumSize() const {
-  return gfx::Size();
+  return gfx::Size(kStrokeWidth, kStrokeWidth);
 }
 
 void FocusableBorder::SetInsets(int top, int left, int bottom, int right) {