Linux: Convert Cookies options page from a list into a tree.

Add gtk_tree::TreeAdapter class.

BUG=26713
TEST=compare behavior to windows impl

Review URL: http://codereview.chromium.org/371079

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31732 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 8 insertions, 0 deletions

diff --git a/app/tree_model.h b/app/tree_model.h
index f6d8da3..e82aa38 100644
--- a/app/tree_model.h
+++ b/app/tree_model.h
@@ -62,6 +62,9 @@ class TreeModel {
   // Returns the child node at the specified index.
   virtual TreeModelNode* GetChild(TreeModelNode* parent, int index) = 0;
 
+  // Returns the index of child node at the specified index.
+  virtual int IndexOfChild(TreeModelNode* parent, TreeModelNode* child) = 0;
+
   // Returns the parent of a node, or NULL if node is the root.
   virtual TreeModelNode* GetParent(TreeModelNode* node) = 0;
 
diff --git a/app/tree_node_model.h b/app/tree_node_model.h
index 2d84050..74aaed0 100644
--- a/app/tree_node_model.h
+++ b/app/tree_node_model.h
@@ -239,6 +239,11 @@ class TreeNodeModel : public TreeModel {
     return AsNode(parent)->GetChild(index);
   }
 
+  virtual int IndexOfChild(TreeModelNode* parent, TreeModelNode* child) {
+    DCHECK(parent);
+    return AsNode(parent)->IndexOfChild(AsNode(child));
+  }
+
   virtual TreeModelNode* GetParent(TreeModelNode* node) {
     DCHECK(node);
     return AsNode(node)->GetParent();