Create a prominent omnibox UI element to add pages to the app launcher.

chrome/browser/ui/views/location_bar/location_bar_view.cc

Index: chrome/browser/ui/views/location_bar/location_bar_view.cc
diff --git a/chrome/browser/ui/views/location_bar/location_bar_view.cc b/chrome/browser/ui/views/location_bar/location_bar_view.cc
index a4a2d0c52dfa7a05c83065f447652d824f274a46..82215297989de8e4bff549647a59e20cdb845f5a 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_view.cc
+++ b/chrome/browser/ui/views/location_bar/location_bar_view.cc
@@ -42,6 +42,7 @@
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/view_ids.h"
 #include "chrome/browser/ui/views/browser_dialogs.h"
+#include "chrome/browser/ui/views/location_bar/add_to_app_launcher_view.h"
 #include "chrome/browser/ui/views/location_bar/content_setting_image_view.h"
 #include "chrome/browser/ui/views/location_bar/ev_bubble_view.h"
 #include "chrome/browser/ui/views/location_bar/generated_credit_card_view.h"
@@ -221,6 +222,7 @@ LocationBarView::LocationBarView(Browser* browser,
       open_pdf_in_reader_view_(NULL),
       manage_passwords_icon_view_(NULL),
       translate_icon_view_(NULL),
+      add_to_app_launcher_view_(NULL),
       star_view_(NULL),
       search_button_(NULL),
       is_popup_mode_(is_popup_mode),
@@ -389,6 +391,11 @@ void LocationBarView::Init() {
   translate_icon_view_->SetVisible(false);
   AddChildView(translate_icon_view_);
 
+  add_to_app_launcher_view_ = new AddToAppLauncherView(
+      this, bubble_font_list, text_color, background_color);
+  add_to_app_launcher_view_->SetVisible(false);
+  AddChildView(add_to_app_launcher_view_);
+
   star_view_ = new StarView(command_updater());
   star_view_->SetVisible(false);
   AddChildView(star_view_);
@@ -688,7 +695,8 @@ gfx::Size LocationBarView::GetPreferredSize() const {
       IncrementalMinimumWidth(manage_passwords_icon_view_) +
       IncrementalMinimumWidth(zoom_view_) +
       IncrementalMinimumWidth(generated_credit_card_view_) +
-      IncrementalMinimumWidth(mic_search_view_) + kItemPadding;
+      IncrementalMinimumWidth(mic_search_view_) +
+      IncrementalMinimumWidth(add_to_app_launcher_view_) + kItemPadding;
   for (PageActionViews::const_iterator i(page_action_views_.begin());
        i != page_action_views_.end(); ++i)
     trailing_width += IncrementalMinimumWidth((*i));
@@ -773,6 +781,10 @@ void LocationBarView::Layout() {
     trailing_decorations.AddDecoration(
         vertical_edge_thickness(), location_height, star_view_);
   }
+  if (add_to_app_launcher_view_->visible()) {
+    trailing_decorations.AddDecoration(
+        vertical_edge_thickness(), location_height, add_to_app_launcher_view_);
+  }
   if (translate_icon_view_->visible()) {
     trailing_decorations.AddDecoration(
         vertical_edge_thickness(), location_height, translate_icon_view_);
@@ -1052,8 +1064,10 @@ void LocationBarView::Update(const WebContents* contents) {
   RefreshPageActionViews();
   RefreshTranslateIcon();
   RefreshManagePasswordsIconView();
-  open_pdf_in_reader_view_->Update(
-      GetToolbarModel()->input_in_progress() ? NULL : GetWebContents());
+  content::WebContents* web_contents_for_sub_views =
+      GetToolbarModel()->input_in_progress() ? NULL : GetWebContents();
+  open_pdf_in_reader_view_->Update(web_contents_for_sub_views);
+  add_to_app_launcher_view_->Update(web_contents_for_sub_views);
 
   if (star_view_) {
     star_view_->SetVisible(