Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/browser/ui/views/omnibox/omnibox_view_views.cc

Index: chrome/browser/ui/views/omnibox/omnibox_view_views.cc
diff --git a/chrome/browser/ui/views/omnibox/omnibox_view_views.cc b/chrome/browser/ui/views/omnibox/omnibox_view_views.cc
index 94a93c12ce9687e8fb8519dc54b6f1b606317b60..f7375b7c938158f0e607b872f57e06f0ad9c492c 100644
--- a/chrome/browser/ui/views/omnibox/omnibox_view_views.cc
+++ b/chrome/browser/ui/views/omnibox/omnibox_view_views.cc
@@ -224,7 +224,8 @@ OmniboxViewViews::OmniboxViewViews(OmniboxEditController* controller,
       delete_at_end_pressed_(false),
       location_bar_view_(location_bar),
       ime_candidate_window_open_(false),
-      select_all_on_mouse_release_(false) {
+      select_all_on_mouse_release_(false),
+      visible_caret_color_(SK_ColorBLACK) {
 }
 
 OmniboxViewViews::~OmniboxViewViews() {
@@ -445,7 +446,7 @@ void OmniboxViewViews::OnBoundsChanged(const gfx::Rect& previous_bounds) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-// OmniboxViewViews, AutocopmleteEditView implementation:
+// OmniboxViewViews, OmniboxView implementation:
 
 void OmniboxViewViews::SaveStateToTab(WebContents* tab) {
   DCHECK(tab);
@@ -574,10 +575,21 @@ void OmniboxViewViews::UpdatePopup() {
 }
 
 void OmniboxViewViews::SetFocus() {
+  model()->SetFocusVisibility(true);
   // In views-implementation, the focus is on textfield rather than OmniboxView.
   textfield_->RequestFocus();
 }
 
+void OmniboxViewViews::ApplyFocusVisibility() {
+  if (textfield_->cursor_color() != textfield_->background_color()) {
+    visible_caret_color_ = textfield_->cursor_color();
+  }
+  // Setting the color of the text cursor (caret) to the background color
+  // effectively hides it.
+  textfield_->SetCursorColor(model()->is_focus_visible() ?
+      visible_caret_color_ : textfield_->background_color());
+}
+
 void OmniboxViewViews::OnTemporaryTextMaybeChanged(
     const string16& display_text,
     bool save_original_selection) {
@@ -604,6 +616,10 @@ void OmniboxViewViews::OnRevertTemporaryText() {
 }
 
 void OmniboxViewViews::OnBeforePossibleChange() {
+  // We set the focus to visible here to cover two cases. This is called when
+  // the user directly clicks on the omnibox as well as when a character is
+  // about to be entered.
+  model()->SetFocusVisibility(true);
   // Record our state.
   text_before_change_ = GetText();
   textfield_->GetSelectedRange(&sel_before_change_);