Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/renderer/searchbox/searchbox.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/searchbox/searchbox.h"
 
 #include "chrome/common/render_messages.h"
 #include "chrome/renderer/searchbox/searchbox_extension.h"
 #include "content/public/renderer/render_view.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
@@ skipping 18 matching lines @@
       suggestions[0].behavior == INSTANT_COMPLETE_REPLACE) {
     query_ = suggestions[0].text;
     verbatim_ = true;
     selection_start_ = selection_end_ = query_.size();
   }
   // Explicitly allow empty vector to be sent to the browser.
   render_view()->Send(new ChromeViewHostMsg_SetSuggestions(
       render_view()->GetRoutingID(), render_view()->GetPageId(), suggestions));
 }
 
+void SearchBox::OnWebSearchBoxFocusChange(bool is_focused) {
+  render_view()->Send(new ChromeViewHostMsg_OnWebSearchBoxFocusChange(
+      render_view()->GetRoutingID(), render_view()->GetPageId(), is_focused));
+}
+
 void SearchBox::ShowInstantPreview(InstantShownReason reason,
                                    int height,
                                    InstantSizeUnits units) {
   render_view()->Send(new ChromeViewHostMsg_ShowInstantPreview(
       render_view()->GetRoutingID(), render_view()->GetPageId(), reason,
       height, units));
 }
 
 gfx::Rect SearchBox::GetRect() {
   // Need to adjust for scale.
@@ skipping 130 matching lines @@
 void SearchBox::Reset() {
   query_.clear();
   verbatim_ = false;
   selection_start_ = 0;
   selection_end_ = 0;
   results_base_ = 0;
   rect_ = gfx::Rect();
   autocomplete_results_.clear();
   active_tab_is_ntp_ = false;
 }