Replace IDR_WEB_UI_CLOSE* with IDR_CLOSE_DIALOG*, cleanup, etc.

chrome/browser/ui/cocoa/hover_close_button.mm

Index: chrome/browser/ui/cocoa/hover_close_button.mm
diff --git a/chrome/browser/ui/cocoa/hover_close_button.mm b/chrome/browser/ui/cocoa/hover_close_button.mm
index 28322b4eae5c3d77c07bd4afa9e906a6a59b680d..1cf7a551937c32660346376c8b1475d4c22a6b03 100644
--- a/chrome/browser/ui/cocoa/hover_close_button.mm
+++ b/chrome/browser/ui/cocoa/hover_close_button.mm
@@ -9,6 +9,7 @@
 #import "chrome/browser/ui/cocoa/animation_utils.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
+#include "grit/ui_resources.h"
 #import "third_party/GTM/AppKit/GTMKeyValueAnimation.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
@@ -219,16 +220,16 @@ NSString* const kFadeOutValueKeyPath = @"fadeOutValue";
 @implementation WebUIHoverCloseButton
 
 - (NSImage*)imageForHoverState:(HoverState)hoverState {
-  int imageID = IDR_WEB_UI_CLOSE;
+  int imageID = IDR_CLOSE_DIALOG;
   switch (hoverState) {
     case kHoverStateNone:
-      imageID = IDR_WEB_UI_CLOSE;
+      imageID = IDR_CLOSE_DIALOG;
       break;
     case kHoverStateMouseOver:
-      imageID = IDR_WEB_UI_CLOSE_HOVER;
+      imageID = IDR_CLOSE_DIALOG_H;
       break;
     case kHoverStateMouseDown:
-      imageID = IDR_WEB_UI_CLOSE_PRESSED;
+      imageID = IDR_CLOSE_DIALOG_P;
       break;
   }
   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();