Add plumbing to command buffer for CALayer min and mag filter.

gpu/GLES2/extensions/CHROMIUM/CHROMIUM_schedule_ca_layer.txt

 Name
 
     CHROMIUM_schedule_ca_layer
 
 Name Strings
 
     GL_CHROMIUM_schedule_ca_layer
 
 Version
 
-    Last Modified Date: December 16, 2015
+    Last Modified Date: April 12, 2016
 
 Dependencies
 
     OpenGL ES 2.0 is required.
 
 Overview
 
     This extension allows a client to request a texture be presented as a
     CoreAnimation layer. The expectation is that all the CALayers scheduled
     since the last call to glSwapBuffers or glPostSubBufferCHROMIUM are
@@ skipping 18 matching lines @@
     The command
 
         glScheduleCALayerCHROMIUM(GLuint contents_texture_id,
                                   const GLfloat* contents_rect,
                                   GLfloat opacity,
                                   GLuint background_color,
                                   GLuint edge_aa_mask,
                                   const GLfloat* bounds_rect,
                                   GLboolean is_clipped,
                                   const GLfloat* clip_rect,
-                                  const GLfloat* transform);
+                                  const GLfloat* transform,
+                                  GLuint filter);
 
     Set the CALayer parameters to be presented at the time of the next call to
     swap buffers. The order of the calls schedule CALayers determines their
     back-to-front presentation order.
     <contents_texture_id> is the texture to be presented. If zero, then the
     CALayer will be a solid color.
     <contents_rect> contains four values indicating the x, y, width, and height
     of the sub-rectangle to display from the texture specified in
     <contents_texture_id>, in normalized coordinates.
     <opacity> specifies the opacity of the CALayer.
     <background_color> specifies the background color of the CALayer, as a
     32-bit ARGB value.
     <edge_aa_mask> is a bitfield specifying which of the edges of the layer are
     to have anti-aliasing.
     <bounds_rect> contains four values indicating the x, y, width, and height of
     the layer in pixels.
     <is_clipped> indicates if the layer should be clipped.
     <clip_rect> contains four values indicating the x, y, width, and height of
     the rectangle to clip the layer to, if it is to be clipped.
     <transform> contains sixteen values indicating the row major order 4x4
     transformation matrix to apply to the CALayer.
+    <filter> will be used for both minification and magnification filtering. The
+    only valid values are GL_LINEAR and GL_NEAREST.
 
 Errors
 
     None.
 
 New State
 
     None.
 
 Revision History
 
+    4/12/2016    Add a parameter to support minification and magnification
+                 filtering.
     12/16/2015   Add clipping and edge anti-aliasing.
     11/7/2015    Initial checkin