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..9b89f85629d4cc98dced248a26190d9e96e6cb68 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;

[Peter Kasting, 2013/01/17 04:14:22]

Nit: pixels.  Though, it's weird to note that only here when all these first
three arguments are in pixels.

Frankly, I'd rename |padding| to |padding_from_previous_item| and |view| to
|separator|, and drop the comment entirely as at that point the function is
self-documenting.

[kuan, 2013/01/17 17:57:43]

Done.

+  // - |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 HideUnneededSeparators(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_;