Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/renderer/searchbox/searchbox.cc

Index: chrome/renderer/searchbox/searchbox.cc
diff --git a/chrome/renderer/searchbox/searchbox.cc b/chrome/renderer/searchbox/searchbox.cc
index 1aba77a77a1516e98dd3e117469eb727ef7ca26f..114fa28f0641ec631fb096577fe9527dd1266eb0 100644
--- a/chrome/renderer/searchbox/searchbox.cc
+++ b/chrome/renderer/searchbox/searchbox.cc
@@ -44,6 +44,16 @@ void SearchBox::ShowInstantPreview(InstantShownReason reason,
       height, units));
 }
 
+void SearchBox::StartCapturingKeyStrokes() {
+  render_view()->Send(new ChromeViewHostMsg_StartCapturingKeyStrokes(
+      render_view()->GetRoutingID(), render_view()->GetPageId()));
+}
+
+void SearchBox::StopCapturingKeyStrokes() {
+  render_view()->Send(new ChromeViewHostMsg_StopCapturingKeyStrokes(
+      render_view()->GetRoutingID(), render_view()->GetPageId()));
+}
+
 gfx::Rect SearchBox::GetRect() {
   // Need to adjust for scale.
   if (rect_.IsEmpty())