Render the tab close button as a vector-based icon.

chrome/browser/ui/tabs/tab_utils.h

Index: chrome/browser/ui/tabs/tab_utils.h
diff --git a/chrome/browser/ui/tabs/tab_utils.h b/chrome/browser/ui/tabs/tab_utils.h
index 3f1b1cdb8d6e1b649a25bbf5d5a670d46965217a..8f45711c59b0c8d69a796413ef24fd74254b3d7b 100644
--- a/chrome/browser/ui/tabs/tab_utils.h
+++ b/chrome/browser/ui/tabs/tab_utils.h
@@ -11,6 +11,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "content/public/browser/web_contents_user_data.h"
+#include "third_party/skia/include/core/SkColor.h"
 
 class TabStripModel;
 
@@ -23,10 +24,6 @@ class Animation;
 class Image;
 }  // namespace gfx
 
-namespace ui {
-class ThemeProvider;
-}
-
 // Media state for a tab.  In reality, more than one of these may apply.  See
 // comments for GetTabMediaStateForContents() below.
 enum TabMediaState {
@@ -87,13 +84,13 @@ TabMediaState GetTabMediaStateForContents(content::WebContents* contents);
 // Returns a cached image, to be shown by the media indicator for the given
 // |media_state|.  Uses the global ui::ResourceBundle shared instance.
 gfx::Image GetTabMediaIndicatorImage(TabMediaState media_state,
-                                     const ui::ThemeProvider* tp);
+                                     SkColor button_color);
 
 // Returns the cached image, to be shown by the media indicator button for mouse
 // hover/pressed, when the indicator is in the given |media_state|.  Uses the
 // global ui::ResourceBundle shared instance.
 gfx::Image GetTabMediaIndicatorAffordanceImage(TabMediaState media_state,
-                                               const ui::ThemeProvider* tp);
+                                               SkColor button_color);
 
 // Returns a non-continuous Animation that performs a fade-in or fade-out
 // appropriate for the given |next_media_state|.  This is used by the tab media