Fix GL_CHROMIUM_framebuffer_multisample to accept the correct enums....

gpu/command_buffer/common/gles2_cmd_utils.cc

 // Copyright (c) 2009 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.
 
 // This file is here so other GLES2 related files can have a common set of
 // includes where appropriate.
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gles2_command_buffer.h>
@@ skipping 175 matching lines @@
     case GL_SUBPIXEL_BITS:
       return 1;
     case GL_TEXTURE_BINDING_2D:
       return 1;
     case GL_TEXTURE_BINDING_CUBE_MAP:
       return 1;
     case GL_UNPACK_ALIGNMENT:
       return 1;
     case GL_VIEWPORT:
       return 4;
+    // -- glGetBooleanv, glGetFloatv, glGetIntergerv with
+    //    GL_CHROMIUM_framebuffer_multisample
+    case GL_MAX_SAMPLES_EXT:
+      return 1;
 
     // -- glGetBufferParameteriv
     case GL_BUFFER_SIZE:
       return 1;
     case GL_BUFFER_USAGE:
       return 1;
 
     // -- glGetFramebufferAttachmentParameteriv
     case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
       return 1;
@@ skipping 309 matching lines @@
     case GL_RGB5_A1:
       return 0x000F;
     default:
       return 0x0000;
   }
 }
 
 }  // namespace gles2
 }  // namespace gpu