alternate ntp: implement right-aligned search token

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

Index: chrome/browser/ui/views/location_bar/location_bar_layout.h
diff --git a/chrome/browser/ui/views/location_bar/location_bar_layout.h b/chrome/browser/ui/views/location_bar/location_bar_layout.h
index 35c4d43bab06faaa4c821f01283dc24acfb3c3d4..d795297b812b0a37e6c8c26a2236d1da83dc07c0 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_layout.h
+++ b/chrome/browser/ui/views/location_bar/location_bar_layout.h
@@ -55,6 +55,13 @@ class LocationBarLayout {
   // Add a non-resizable decoration with standard padding.
   void AddDecoration(int height, int builtin_padding, views::View* view);
 
+  // Add a separator, specifying:
+  // - The |y| position inside its parent;
+  // - The |height| in pixel;
+  // - |padding|, the padding between the previous item and this separator;
+  // - The |view| corresponding to this separator, a weak pointer.
+  void AddSeparator(int y, int height, int padding, views::View* view);
+
   // First pass of decoration layout process. Pass the full width of the
   // location bar in |entry_width|. This pass will adjust it to account for
   // non-collapsible and non-resizable decorations.
@@ -73,7 +80,17 @@ class LocationBarLayout {
   // bar towards the middle.
   void LayoutPass3(gfx::Rect* bounds, int* available_width);
 
+  // Sets the padding between edit and the decoration beside it.
+  // This value must not be modified after LayoutPass1 has been called.
+  void set_item_edit_padding(int item_edit_padding) {
+    item_edit_padding_ = item_edit_padding;
+  }
+
  private:
+  void SetVisibilityForDecorations(int* available_width);
+  void SetSeparatorsInvisible(int* available_width);
+  void SetBoundsForDecorations(gfx::Rect* bounds);
+
   // LEFT_EDGE means decorations are added from left to right and stacked on
   // the left of the omnibox, RIGHT_EDGE means the opposite.
   Position position_;