Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/browser/ui/browser_instant_controller.cc

 // Copyright 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/browser/ui/browser_instant_controller.h"
 
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/browser/themes/theme_service_factory.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/omnibox/location_bar.h"
+#include "chrome/browser/ui/omnibox/omnibox_view.h"
 #include "chrome/browser/ui/search/search.h"
 #include "chrome/browser/ui/search/search_model.h"
 #include "chrome/browser/ui/search/search_tab_helper.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/ntp/app_launcher_handler.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 95 matching lines @@
 gfx::Rect BrowserInstantController::GetInstantBounds() {
   return browser_->window()->GetInstantBounds();
 }
 
 void BrowserInstantController::InstantPreviewFocused() {
   // NOTE: This is only invoked on aura.
   browser_->window()->WebContentsFocused(
       instant_.GetPreviewContents()->web_contents());
 }
 
+void BrowserInstantController::SetInvisibleFocus() {
+  if (browser_->window()->GetLocationBar()) {

[Peter Kasting, 2012/12/01 03:49:58]

When will the window not have a location bar?  We should never NULL-check things
that can't be NULL.

[samarth, 2012/12/03 06:46:15]

I was just following the pattern in SetSuggestion before.  But if this can never
be NULL, I'll just take out the check here and above.

+    browser_->window()->GetLocationBar()->GetLocationEntry()->
+        SetInvisibleFocus();
+  }
+}
+
 TabContents* BrowserInstantController::GetActiveTabContents() const {
   return browser_->tab_strip_model()->GetActiveTabContents();
 }
 
 void BrowserInstantController::ActiveTabChanged() {
   instant_.ActiveTabChanged();
 }
 
 void BrowserInstantController::SetContentHeight(int height) {
   OnThemeAreaHeightChanged(height);
@@ skipping 126 matching lines @@
   // part of the image overlay should draw, 'cos the origin is top-left.
   if (!browser_->search_model()->mode().is_ntp() ||
       theme_info_.theme_id.empty() ||
       theme_info_.image_vertical_alignment == THEME_BKGRND_IMAGE_ALIGN_TOP) {
     return;
   }
   instant_.ThemeAreaHeightChanged(theme_area_height_);
 }
 
 }  // namespace chrome