Handle Esc key press event in Local NTP.

chrome/browser/ui/search/instant_controller.cc

Index: chrome/browser/ui/search/instant_controller.cc
diff --git a/chrome/browser/ui/search/instant_controller.cc b/chrome/browser/ui/search/instant_controller.cc
index 734223f576163de72022b539f28ce94622af602d..1c1b330ccb3da517d3962a1ef88d5f32918956b1 100644
--- a/chrome/browser/ui/search/instant_controller.cc
+++ b/chrome/browser/ui/search/instant_controller.cc
@@ -358,14 +358,12 @@ bool InstantController::Update(const AutocompleteMatch& match,
           // tab), by comparing the old and new WebContents.
           if (escape_pressed &&
               instant_tab_->contents() == browser_->GetActiveWebContents()) {
-            // If the omnibox is blank, send an onchange("") instead of an
-            // onsubmit(""). This is to avoid confusion with the onsubmit("")
-            // that we send when the user hits Enter to navigate to a URL.
-            // onchange("") is used for a similar situation with the overlay
-            // (when the overlay is dismissed because the user hit Escape); it
-            // does the right thing for committed tabs as well.
+            // TODO(kmadhusu): If the |full_text| is not empty, send an
+            // onkeypress(esc) to the Instant page. Do not call
+            // onsubmit(full_text). The Instant page should handle the key press
+            // event and do the right thing. Fix this.
             if (full_text.empty())
-              instant_tab_->Update(string16(), 0, 0, true);
+              instant_tab_->EscKeyPressed();
             else
               instant_tab_->Submit(full_text);
           }