First stab at touch optimized omnibox auto-complete per sgabriel's mocks.

chrome/browser/ui/views/autocomplete/autocomplete_result_view.h

Index: chrome/browser/ui/views/autocomplete/autocomplete_result_view.h
diff --git a/chrome/browser/ui/views/autocomplete/autocomplete_result_view.h b/chrome/browser/ui/views/autocomplete/autocomplete_result_view.h
index 7d79dfde481b39f53735fe7111b72d6bccf1dac7..af8be2e4cf48098a7c415c508c750ba637e3a24c 100644
--- a/chrome/browser/ui/views/autocomplete/autocomplete_result_view.h
+++ b/chrome/browser/ui/views/autocomplete/autocomplete_result_view.h
@@ -60,10 +60,18 @@ class AutocompleteResultView : public views::View,
   virtual gfx::Size GetPreferredSize() OVERRIDE;
 
  protected:
+  ResultViewState GetState() const;
+
   virtual void PaintMatch(gfx::Canvas* canvas,
                           const AutocompleteMatch& match,
                           int x);
 
+  // The base class never adjusts the bounds for the icon.  Subclasses
+  // may adjust them e.g. if they are using a multi-line or horizontal
+  // layout.
+  virtual void AdjustIconBounds(const AutocompleteMatch& match,
+                                gfx::Rect* bounds);
+
   // Returns the height of the text portion of the result view. In the base
   // class, this is the height of one line of text.
   virtual int GetTextHeight() const;
@@ -81,6 +89,12 @@ class AutocompleteResultView : public views::View,
 
   const gfx::Rect& text_bounds() const { return text_bounds_; }
 
+  void set_edge_item_padding(int value) { edge_item_padding_ = value; }
+  void set_item_padding(int value) { item_padding_ = value; }
+  void set_minimum_text_vertical_padding(int value) {
+    minimum_text_vertical_padding_ = value;
+  }
+
  private:
   struct ClassificationData;
   typedef std::vector<ClassificationData> Classifications;
@@ -92,7 +106,6 @@ class AutocompleteResultView : public views::View,
   static bool SortRunsLogically(const RunData& lhs, const RunData& rhs);
   static bool SortRunsVisually(const RunData& lhs, const RunData& rhs);
 
-  ResultViewState GetState() const;
   const SkBitmap* GetIcon() const;
   const SkBitmap* GetKeywordIcon() const;
 
@@ -122,6 +135,11 @@ class AutocompleteResultView : public views::View,
 
   static int default_icon_size_;
 
+  // Default values cached here, may be overridden by subclasses.
+  int edge_item_padding_;
+  int item_padding_;
+  int minimum_text_vertical_padding_;
+
   // This row's model and model index.
   AutocompleteResultViewModel* model_;
   size_t model_index_;