Add caps and GL API for buffer texture

src/gpu/gl/GrGLDefines.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
 #ifndef GrGLDefines_DEFINED
@@ skipping 91 matching lines @@
 #define GR_GL_CONSTANT_COLOR                 0x8001
 #define GR_GL_ONE_MINUS_CONSTANT_COLOR       0x8002
 #define GR_GL_CONSTANT_ALPHA                 0x8003
 #define GR_GL_ONE_MINUS_CONSTANT_ALPHA       0x8004
 #define GR_GL_BLEND_COLOR                    0x8005
 
 /* Buffer Objects */
 #define GR_GL_ARRAY_BUFFER                   0x8892
 #define GR_GL_ELEMENT_ARRAY_BUFFER           0x8893
 #define GR_GL_DRAW_INDIRECT_BUFFER           0x8F3F
+#define GR_GL_TEXTURE_BUFFER                 0x8C2A
 #define GR_GL_ARRAY_BUFFER_BINDING           0x8894
 #define GR_GL_ELEMENT_ARRAY_BUFFER_BINDING   0x8895
 #define GR_GL_DRAW_INDIRECT_BUFFER_BINDING   0x8F43
 #define GR_GL_PIXEL_PACK_BUFFER              0x88EB
 #define GR_GL_PIXEL_UNPACK_BUFFER            0x88EC
 
 #define GR_GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM 0x78EC 
 #define GR_GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM   0x78ED
 
 #define GR_GL_STREAM_DRAW                    0x88E0
@@ skipping 107 matching lines @@
 #define GR_GL_POLYGON_OFFSET_FACTOR          0x8038
 #define GR_GL_TEXTURE_BINDING_2D             0x8069
 #define GR_GL_SAMPLE_BUFFERS                 0x80A8
 #define GR_GL_SAMPLES                        0x80A9
 #define GR_GL_SAMPLE_COVERAGE_VALUE          0x80AA
 #define GR_GL_SAMPLE_COVERAGE_INVERT         0x80AB
 #define GR_GL_RENDERBUFFER_COVERAGE_SAMPLES  0x8CAB
 #define GR_GL_RENDERBUFFER_COLOR_SAMPLES     0x8E10
 #define GR_GL_MAX_MULTISAMPLE_COVERAGE_MODES 0x8E11
 #define GR_GL_MULTISAMPLE_COVERAGE_MODES     0x8E12
+#define GR_GL_MAX_TEXTURE_BUFFER_SIZE        0x8C2B
 
 /* GetTextureParameter */
 /*      GL_TEXTURE_MAG_FILTER */
 /*      GL_TEXTURE_MIN_FILTER */
 /*      GL_TEXTURE_WRAP_S */
 /*      GL_TEXTURE_WRAP_T */
 
 #define GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
 #define GR_GL_COMPRESSED_TEXTURE_FORMATS     0x86A3
 
@@ skipping 708 matching lines @@
 #define GR_EGL_EXTENSIONS                                   0x3055
 #define GR_EGL_GL_TEXTURE_2D                                0x30B1
 #define GR_EGL_GL_TEXTURE_LEVEL                             0x30BC
 #define GR_EGL_IMAGE_PRESERVED                              0x30D2
 #define GR_EGL_FALSE                                        0x0
 #define GR_EGL_TRUE                                         0x1
 #define GR_EGL_NONE                                         0x3038
 #define GR_EGL_NO_IMAGE                                    ((GrEGLImage)0)
 
 #endif