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 9e30ca2400354250f6f4c91a3d5ce2c041400ae7..1e246a2c6b1500c4980d6672540912374e38c065 100644
--- a/chrome/renderer/searchbox/searchbox.cc
+++ b/chrome/renderer/searchbox/searchbox.cc
@@ -45,6 +45,16 @@ 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())