Remove obsolete code: NineBox::ChangeWhiteToTransparent.

crrev.com/103851 added alpha transparency to png images:
chrome/app/theme/find_dlg_[left|right]_bg.png
Keying transparency from white pixels is no longer needed.

BUG=98822
TEST=No visual differences on NineBox items (find bar, etc.)

Review URL: http://codereview.chromium.org/8122016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@104073 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 0 insertions, 34 deletions

diff --git a/chrome/browser/ui/gtk/find_bar_gtk.cc b/chrome/browser/ui/gtk/find_bar_gtk.cc
index a84611f..81e233d 100644
--- a/chrome/browser/ui/gtk/find_bar_gtk.cc
+++ b/chrome/browser/ui/gtk/find_bar_gtk.cc
@@ -134,7 +134,6 @@ void SetDialogShape(GtkWidget* widget) {
       IDR_FIND_DLG_MIDDLE_BACKGROUND,
       IDR_FIND_DLG_RIGHT_BACKGROUND,
       0, 0, 0, 0, 0, 0);
-    dialog_shape->ChangeWhiteToTransparent();
   }
 
   dialog_shape->ContourWidget(widget);
diff --git a/chrome/browser/ui/gtk/nine_box.cc b/chrome/browser/ui/gtk/nine_box.cc
index 35dfb32..1decd3b 100644
--- a/chrome/browser/ui/gtk/nine_box.cc
+++ b/chrome/browser/ui/gtk/nine_box.cc
@@ -174,36 +174,6 @@ void NineBox::RenderTopCenterStrip(cairo_t* cr, int x, int y,
   TileImage(cr, images_[1], x, y, width, height, 1.0);
 }
 
-void NineBox::ChangeWhiteToTransparent() {
-  for (int image_idx = 0; image_idx < 9; ++image_idx) {
-    GdkPixbuf* pixbuf = images_[image_idx];
-    if (!pixbuf)
-      continue;
-
-    if (!gdk_pixbuf_get_has_alpha(pixbuf))
-      continue;
-
-    guchar* pixels = gdk_pixbuf_get_pixels(pixbuf);
-    int rowstride = gdk_pixbuf_get_rowstride(pixbuf);
-    int width = gdk_pixbuf_get_width(pixbuf);
-    int height = gdk_pixbuf_get_height(pixbuf);
-
-    if (width * 4 > rowstride) {
-      NOTREACHED();
-      continue;
-    }
-
-    for (int i = 0; i < height; ++i) {
-      for (int j = 0; j < width; ++j) {
-         guchar* pixel = &pixels[i * rowstride + j * 4];
-         if (pixel[0] == 0xff && pixel[1] == 0xff && pixel[2] == 0xff) {
-           pixel[3] = 0;
-         }
-      }
-    }
-  }
-}
-
 void NineBox::ContourWidget(GtkWidget* widget) const {
   int width = widget->allocation.width;
   int height = widget->allocation.height;
diff --git a/chrome/browser/ui/gtk/nine_box.h b/chrome/browser/ui/gtk/nine_box.h
index 6a8fc85..25a86cb 100644
--- a/chrome/browser/ui/gtk/nine_box.h
+++ b/chrome/browser/ui/gtk/nine_box.h
@@ -43,9 +43,6 @@ class NineBox {
   // This is split from RenderToWidget so the toolbar can use it.
   void RenderTopCenterStrip(cairo_t* cr, int x, int y, int width) const;
 
-  // Change all pixels that are white in |images_| to have 0 opacity.
-  void ChangeWhiteToTransparent();
-
   // Set the shape of |widget| to match that of the ninebox. Note that |widget|
   // must have its own window and be allocated. Also, currently only the top
   // three images are used.