Fix padding in location bar bubbles to match specs on bug.

chrome/browser/ui/views/location_bar/icon_label_bubble_view.h

Index: chrome/browser/ui/views/location_bar/icon_label_bubble_view.h
diff --git a/chrome/browser/ui/views/location_bar/icon_label_bubble_view.h b/chrome/browser/ui/views/location_bar/icon_label_bubble_view.h
index d3b42042efb62b28cee400eb859ca91b15f6ecf5..c681bcf999de23de372d891e398916774fc7cf23 100644
--- a/chrome/browser/ui/views/location_bar/icon_label_bubble_view.h
+++ b/chrome/browser/ui/views/location_bar/icon_label_bubble_view.h
@@ -74,10 +74,6 @@ class IconLabelBubbleView : public views::InkDropHostView {
   // Returns true when animation is in progress and is shrinking.
   virtual bool IsShrinking() const;
 
-  // Returns the amount of horizontal space needed to draw the image and its
-  // padding before the label.
-  virtual int GetImageAndPaddingWidth() const;
-
   // views::View:
   gfx::Size GetPreferredSize() const override;
   void Layout() override;
@@ -117,6 +113,14 @@ class IconLabelBubbleView : public views::InkDropHostView {
   views::ImageView* image_;
   views::Label* label_;
 
+  // How much horizontal padding (fully-transparent columns) is inside the
+  // image.  These are subtracted from the desired padding values when
+  // calculating the padding around the image, so that the image always appears
+  // to have the same visible padding no matter what its composition is.  Only
+  // used in MD.
+  int builtin_leading_padding_;
+  int builtin_trailing_padding_;
+
   bool is_extension_icon_;
 
   // This is only used in pre-MD. In MD, the background color is derived from