Add sRGB texture support.

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 752 matching lines @@
 #define GR_GL_RENDERBUFFER_BLUE_SIZE         0x8D52
 #define GR_GL_RENDERBUFFER_ALPHA_SIZE        0x8D53
 #define GR_GL_RENDERBUFFER_DEPTH_SIZE        0x8D54
 #define GR_GL_RENDERBUFFER_STENCIL_SIZE      0x8D55
 
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE           0x8CD0
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME           0x8CD1
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL         0x8CD2
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER         0x8CD4
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING        0x8210
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE        0x8211
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE              0x8212
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE            0x8213
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE             0x8214
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE            0x8215
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE            0x8216
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE          0x8217
 
 #define GR_GL_COLOR_ATTACHMENT0              0x8CE0
 #define GR_GL_DEPTH_ATTACHMENT               0x8D00
 #define GR_GL_STENCIL_ATTACHMENT             0x8D20
@@ skipping 65 matching lines @@
 // NV_path_rendering extension to EXT_direct_state_access:
 // [the matrix functions] must support the PATH_PROJECTION_NV and
 // PATH_MODELVIEW_NV tokens for matrixMode.
 #define GR_GL_PATH_PROJECTION                               0x1701
 #define GR_GL_PATH_MODELVIEW                                0x1700
 
 /*  ARM specific define for MSAA support on framebuffer fetch */
 #define GR_GL_FETCH_PER_SAMPLE_ARM                          0x8F65
 
 #endif