linux: delete code that worked around gtk <2.18

webkit/glue/webcursor_gtk.cc

 // Copyright (c) 2011 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.
 
 #include "webkit/glue/webcursor.h"
 
 #include <gdk/gdk.h>
 #include <gtk/gtk.h>
 
 #include "base/logging.h"
@@ skipping 26 matching lines @@
                                                   32, 32);
     cursor = gdk_cursor_new_from_pixmap(source, mask, &fg, &bg,
                                         custom.hot_x, custom.hot_y);
     g_object_unref(source);
     g_object_unref(mask);
   }
   CustomCursorsGdk[type] = cursor;
   return cursor;
 }
 
-// For GTK 2.16 and beyond, GDK_BLANK_CURSOR is available. Before, we have to
-// use a custom cursor.
-#if !GTK_CHECK_VERSION(2, 16, 0)
-// Get/create a custom cursor which is invisible.
-GdkCursor* GetInvisibleCustomCursor() {
-  static GdkCursor* cursor = NULL;
-  if (cursor)
-    return cursor;
-  const char bits[] = { 0 };
-  const GdkColor color = { 0, 0, 0, 0 };
-  GdkPixmap* bitmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1);
-  cursor = gdk_cursor_new_from_pixmap(bitmap, bitmap, &color, &color, 0, 0);
-  g_object_unref(bitmap);
-  return cursor;
-}
-#endif
-
 }  // end anonymous namespace
 
 int WebCursor::GetCursorType() const {
   // http://library.gnome.org/devel/gdk/2.12/gdk-Cursors.html has images
   // of the default X theme, but beware that the user's cursor theme can
   // change everything.
   switch (type_) {
     case WebCursorInfo::TypePointer:
       return GDK_LAST_CURSOR;
     case WebCursorInfo::TypeCross:
@@ skipping 62 matching lines @@
       NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
     case WebCursorInfo::TypeAlias:
       NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
     case WebCursorInfo::TypeProgress:
       return GDK_WATCH;
     case WebCursorInfo::TypeNoDrop:
       NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
     case WebCursorInfo::TypeCopy:
       NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
     case WebCursorInfo::TypeNone:
-// See comment above |GetInvisibleCustomCursor()|.
-#if !GTK_CHECK_VERSION(2, 16, 0)
-      return GDK_CURSOR_IS_PIXMAP;
-#else
       return GDK_BLANK_CURSOR;
-#endif
     case WebCursorInfo::TypeNotAllowed:
       NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
     case WebCursorInfo::TypeZoomIn:
     case WebCursorInfo::TypeZoomOut:
     case WebCursorInfo::TypeGrab:
     case WebCursorInfo::TypeGrabbing:
     case WebCursorInfo::TypeCustom:
       return GDK_CURSOR_IS_PIXMAP;
   }
   NOTREACHED();
   return GDK_LAST_CURSOR;
 }
 
 gfx::NativeCursor WebCursor::GetNativeCursor() {
   int type = GetCursorType();
   if (type == GDK_CURSOR_IS_PIXMAP)
     return GetCustomCursor();
   return gfx::GetCursor(type);
 }
 
 GdkCursor* WebCursor::GetCustomCursor() {
   switch (type_) {
-// See comment above |GetInvisibleCustomCursor()|.
-#if !GTK_CHECK_VERSION(2, 16, 0)
-    case WebCursorInfo::TypeNone:
-      return GetInvisibleCustomCursor();
-#endif
     case WebCursorInfo::TypeZoomIn:
       return GetInlineCustomCursor(CustomCursorZoomIn);
     case WebCursorInfo::TypeZoomOut:
       return GetInlineCustomCursor(CustomCursorZoomOut);
     case WebCursorInfo::TypeGrab:
       return GetInlineCustomCursor(CustomCursorGrab);
     case WebCursorInfo::TypeGrabbing:
       return GetInlineCustomCursor(CustomCursorGrabbing);
   }
 
@@ skipping 45 matching lines @@
     unref_ = NULL;
   }
   return;
 }
 
 void WebCursor::CopyPlatformData(const WebCursor& other) {
   if (other.unref_)
     unref_ = gdk_cursor_ref(other.unref_);
   return;
 }