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 f07423724317509cb8b472a424bbb0dff79364c8..8c9763aee18c55b9a17d67fa63c300e586835486 100644
--- a/chrome/renderer/searchbox/searchbox.cc
+++ b/chrome/renderer/searchbox/searchbox.cc
@@ -37,6 +37,16 @@ void SearchBox::SetSuggestions(
       render_view()->GetRoutingID(), render_view()->GetPageId(), suggestions));
 }
 
+void SearchBox::OnWebSearchBoxBlur() {
+  render_view()->Send(new ChromeViewHostMsg_OnWebSearchBoxBlur(
+      render_view()->GetRoutingID(), render_view()->GetPageId()));
+}
+
+void SearchBox::OnWebSearchBoxFocus() {
+  render_view()->Send(new ChromeViewHostMsg_OnWebSearchBoxFocus(
+      render_view()->GetRoutingID(), render_view()->GetPageId()));
+}
+
 void SearchBox::ShowInstantPreview(InstantShownReason reason,
                                    int height,
                                    InstantSizeUnits units) {