Add support for a "split" incognito behavior for extensions.

chrome/browser/views/location_bar/icon_label_bubble_view.h

Index: chrome/browser/views/location_bar/icon_label_bubble_view.h
diff --git a/chrome/browser/views/location_bar/icon_label_bubble_view.h b/chrome/browser/views/location_bar/icon_label_bubble_view.h
index de252ddb43c463d1ce28792cf507d3d3166a136e..d2e4b782231f11c43ee4a776cf756fb2d4eb5725 100644
--- a/chrome/browser/views/location_bar/icon_label_bubble_view.h
+++ b/chrome/browser/views/location_bar/icon_label_bubble_view.h
@@ -36,6 +36,7 @@ class IconLabelBubbleView : public views::View {
   void SetFont(const gfx::Font& font);
   void SetLabel(const std::wstring& label);
   void SetImage(const SkBitmap& bitmap);
+  void SetItemPadding(int padding) { item_padding_ = padding; }
 
   virtual void Paint(gfx::Canvas* canvas);
   virtual gfx::Size GetPreferredSize();
@@ -55,6 +56,8 @@ class IconLabelBubbleView : public views::View {
   views::ImageView* image_;
   views::Label* label_;
 
+  int item_padding_;
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(IconLabelBubbleView);
 };