linux_aura: Fix the insets on LabelButtons.

chrome/browser/ui/views/toolbar/back_button.h

Index: chrome/browser/ui/views/toolbar/back_button.h
diff --git a/chrome/browser/ui/views/toolbar/back_button.h b/chrome/browser/ui/views/toolbar/back_button.h
index 3225706ad1b4a634b6dcb6439072ec58371285d0..516dd52a709d8691c222fc22fe37a140056bb3e0 100644
--- a/chrome/browser/ui/views/toolbar/back_button.h
+++ b/chrome/browser/ui/views/toolbar/back_button.h
@@ -31,7 +31,8 @@ class BackButton : public ToolbarButton {
 
  protected:
   virtual gfx::Rect GetThemePaintRect() const OVERRIDE;
-  virtual scoped_ptr<views::Border> CreateDefaultBorder() const OVERRIDE;
+  virtual scoped_ptr<views::LabelButtonBorder> CreateDefaultBorder() const
+      OVERRIDE;

[msw, 2014/05/22 18:09:22]

why did this change back to putting OVERRIDE on its own line?

[Elliot Glaysher, 2014/05/22 18:14:03]

Because this is what clang-format does. (Likewise, my google style aware editor
knows the indentation for breaking here, but not for breaking between type and
function name.)

$ git grep "   OVERRIDE;" | wc -l
541

[sky, 2014/05/22 19:44:21]

The style guide previously said don't do this (same for const), but that section
was removed. So, this style is fine.

 
  private:
   // Any leading margin to be applied. Used when the back button is in