Implement the Instant extended API startMargin, endMargin, and rtl properties and the onmarginchang…

chrome/renderer/searchbox/searchbox.h

Index: chrome/renderer/searchbox/searchbox.h
diff --git a/chrome/renderer/searchbox/searchbox.h b/chrome/renderer/searchbox/searchbox.h
index d6105614013b126e55ad19e05473810ce8b0f9b8..b2f411d62fffdb6014bfe8f071bf4e5b4f93a358 100644
--- a/chrome/renderer/searchbox/searchbox.h
+++ b/chrome/renderer/searchbox/searchbox.h
@@ -44,7 +44,14 @@ class SearchBox : public content::RenderViewObserver,
   int results_base() const { return results_base_; }
   bool active_tab_is_ntp() const { return active_tab_is_ntp_; }
 
-  gfx::Rect GetRect();
+  // These functions return the start/end margins of the page text area
+  // adjusted for the page zoom.
+  int GetStartMargin();
+  int GetEndMargin();
+
+  // Returns the bounds of the Searchbox popup in screen coordinates.
+  gfx::Rect GetPopupBounds();
+
   const std::vector<InstantAutocompleteResult>& GetAutocompleteResults();
   // Searchbox retains ownership of this object.
   const InstantAutocompleteResult*
@@ -60,7 +67,8 @@ class SearchBox : public content::RenderViewObserver,
                 size_t selection_end);
   void OnSubmit(const string16& query);
   void OnCancel(const string16& query);
-  void OnResize(const gfx::Rect& bounds);
+  void OnPopupResize(const gfx::Rect& bounds);
+  void OnMarginChange(int start, int end);
   void OnDetermineIfPageSupportsInstant();
   void OnAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
@@ -69,6 +77,9 @@ class SearchBox : public content::RenderViewObserver,
   void OnBlur();
   void OnActiveTabModeChanged(bool active_tab_is_ntp);
 
+  // Returns the current zoom factor of the render view or 1 on failure.
+  double GetZoom();
+
   // Sets the searchbox values to their initial value.
   void Reset();
 
@@ -77,7 +88,9 @@ class SearchBox : public content::RenderViewObserver,
   size_t selection_start_;
   size_t selection_end_;
   size_t results_base_;
-  gfx::Rect rect_;
+  int start_margin_;
+  int end_margin_;
+  gfx::Rect popup_bounds_;
   std::vector<InstantAutocompleteResult> autocomplete_results_;
   size_t last_results_base_;
   std::vector<InstantAutocompleteResult> last_autocomplete_results_;