chrome: remove omnibox_ev_bubble_xxx.png assets

chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.mm

Index: chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.mm b/chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.mm
index 426c4d139f407ba1020fc470672ef742e1be79c0..71b9e2d57b4ffeee6582221dab0ad9e61bff6ac6 100644
--- a/chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.mm
+++ b/chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.mm
@@ -8,7 +8,6 @@
 #import "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h"
 #include "chrome/browser/ui/location_bar/location_bar_util.h"
 #include "chrome/grit/generated_resources.h"
-#include "chrome/grit/theme_resources.h"
 #include "skia/ext/skia_utils_mac.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/base/material_design/material_design_controller.h"
@@ -52,10 +51,6 @@ CGFloat SelectedKeywordDecoration::GetWidthForSpace(CGFloat width) {
   return GetWidthForImageAndLabel(nil, partial_string_);
 }
 
-ui::NinePartImageIds SelectedKeywordDecoration::GetBubbleImageIds() {
-  return IMAGE_GRID(IDR_OMNIBOX_SELECTED_KEYWORD_BUBBLE);
-}
-
 void SelectedKeywordDecoration::SetKeyword(const base::string16& short_name,
                                            bool is_extension_keyword) {
   const base::string16 min_name(