Mac: Kill lots of AcceleratedWidget code (with fire)

ui/accelerated_widget_mac/accelerated_widget_mac.gyp

Index: ui/accelerated_widget_mac/accelerated_widget_mac.gyp
diff --git a/ui/accelerated_widget_mac/accelerated_widget_mac.gyp b/ui/accelerated_widget_mac/accelerated_widget_mac.gyp
index 69d429faebfaaafee8e858d3242333d6148454b0..6dce66767fa5cd3377444c14fdd659e663916b64 100644
--- a/ui/accelerated_widget_mac/accelerated_widget_mac.gyp
+++ b/ui/accelerated_widget_mac/accelerated_widget_mac.gyp
@@ -19,12 +19,6 @@
         'display_link_mac.h',
         'io_surface_context.h',
         'io_surface_context.mm',
-        'io_surface_layer.h',
-        'io_surface_layer.mm',
-        'io_surface_texture.h',
-        'io_surface_texture.mm',
-        'software_layer.h',
-        'software_layer.mm',
         'surface_handle_types.cc',
         'surface_handle_types.h',
         'window_resize_helper_mac.cc',
@@ -43,9 +37,6 @@
       ],
       'link_settings': {
         'libraries': [
-          # Required by io_surface_texture.mm.
-          '$(SDKROOT)/System/Library/Frameworks/IOSurface.framework',
-          '$(SDKROOT)/System/Library/Frameworks/OpenGL.framework',
           '$(SDKROOT)/System/Library/Frameworks/QuartzCore.framework',
         ],
       },