Persist the Instant API to committed search result pages.

chrome/browser/instant/instant_model.cc

Index: chrome/browser/instant/instant_model.cc
diff --git a/chrome/browser/instant/instant_model.cc b/chrome/browser/instant/instant_model.cc
index bafad5af0648afb53e44c4f59291ae8d2ca27192..2a333bd7ca2f61d780ac8673bae2a4f5993b5779 100644
--- a/chrome/browser/instant/instant_model.cc
+++ b/chrome/browser/instant/instant_model.cc
@@ -38,7 +38,7 @@ void InstantModel::SetPreviewState(const chrome::search::Mode& mode,
                     PreviewStateChanged(*this));
 }
 
-void InstantModel::SetPreviewContents(TabContents* preview_contents) {
+void InstantModel::SetPreviewContents(content::WebContents* preview_contents) {
   if (preview_contents_ == preview_contents)
     return;
 
@@ -48,7 +48,7 @@ void InstantModel::SetPreviewContents(TabContents* preview_contents) {
                     PreviewStateChanged(*this));
 }
 
-TabContents* InstantModel::GetPreviewContents() const {
+content::WebContents* InstantModel::GetPreviewContents() const {
   return controller_->GetPreviewContents();
 }