Remove some more !IsModeMaterial code.

chrome/browser/ui/views/tabs/tab.h

Index: chrome/browser/ui/views/tabs/tab.h
diff --git a/chrome/browser/ui/views/tabs/tab.h b/chrome/browser/ui/views/tabs/tab.h
index c02763933008e9c28119290f1a1420b56ec08df6..9c2ff815e917e3c369c996080dfa9199981afd56 100644
--- a/chrome/browser/ui/views/tabs/tab.h
+++ b/chrome/browser/ui/views/tabs/tab.h
@@ -226,20 +226,23 @@ class Tab : public gfx::AnimationDelegate,
   // Invoked from SetData after |data_| has been updated to the new data.
   void DataChanged(const TabRendererData& old);
 
-  // Paint with the normal tab style.  If |clip| is non-empty, the tab border
+  // Paints with the normal tab style.  If |clip| is non-empty, the tab border
   // should be clipped against it.
   void PaintTab(gfx::Canvas* canvas, const gfx::Path& clip);
 
-  // Paint with the "immersive mode" light-bar style.
+  // Paints with the "immersive mode" light-bar style.
   void PaintImmersiveTab(gfx::Canvas* canvas);
 
-  // Paint various portions of the Tab.
+  // Paints the background of an inactive tab.
   void PaintInactiveTabBackground(gfx::Canvas* canvas, const gfx::Path& clip);
+
+  // Paints a tab background using the image defined by |fill_id| at the
+  // provided offset. If |fill_id| is 0, it will fall back to using the solid
+  // color defined by the theme provider and ignore the offset.
   void PaintTabBackgroundUsingFillId(gfx::Canvas* fill_canvas,
                                      gfx::Canvas* stroke_canvas,
                                      bool is_active,
                                      int fill_id,
-                                     bool has_custom_image,
                                      int y_offset);
 
   // Paints the pinned tab title changed indicator and |favicon_|. |favicon_|