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

chrome/browser/ui/tabs/tab_utils.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_TABS_TAB_UTILS_H_
 #define CHROME_BROWSER_UI_TABS_TAB_UTILS_H_
 
 #include <string>
 #include <vector>
 
 #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;
 
 namespace content {
 class WebContents;
 }  // namespace content
 
 namespace gfx {
 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 {
   TAB_MEDIA_STATE_NONE,
   TAB_MEDIA_STATE_RECORDING,  // Audio/Video being recorded, consumed by tab.
   TAB_MEDIA_STATE_CAPTURING,  // Tab contents being captured.
   TAB_MEDIA_STATE_AUDIO_PLAYING,  // Audible audio is playing from the tab.
   TAB_MEDIA_STATE_AUDIO_MUTING,  // Tab audio is being muted.
 };
 
@@ skipping 40 matching lines @@
                               bool is_active_tab);
 
 // Returns the media state to be shown by the tab's media indicator.  When
 // multiple states apply (e.g., tab capture with audio playback), the one most
 // relevant to user privacy concerns is selected.
 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
 // indicator to alert the user that recording, tab capture, or audio playback
 // has started/stopped.
 scoped_ptr<gfx::Animation> CreateTabMediaIndicatorFadeAnimation(
     TabMediaState next_media_state);
 
 // Returns the text to show in a tab's tooltip: The contents |title|, followed
 // by a break, followed by a localized string describing the |media_state|.
@@ skipping 35 matching lines @@
 // string is returned.
 const std::string& GetExtensionIdForMutedTab(content::WebContents* contents);
 
 // Returns true if the tabs at the |indices| in |tab_strip| are all muted.
 bool AreAllTabsMuted(const TabStripModel& tab_strip,
                      const std::vector<int>& indices);
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_TABS_TAB_UTILS_H_