Add support for all blendmodes if we have GL_KHR_blend_equation_advanced.

ui/gl/gl_bindings.h

 // Copyright (c) 2012 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.
 
 #ifndef UI_GL_GL_BINDINGS_H_
 #define UI_GL_GL_BINDINGS_H_
 
 // Includes the platform independent and platform dependent GL headers.
 // Only include this in cc files. It pulls in system headers, including
 // the X11 headers on linux, which define all kinds of macros that are
@@ skipping 208 matching lines @@
 
 #ifndef GL_CHROMIUM_path_rendering
 // These match the corresponding values in NV_path_rendering
 // extension, eg tokens with CHROMIUM replaced with NV.
 #define GL_PATH_MODELVIEW_MATRIX_CHROMIUM 0x0BA6
 #define GL_PATH_PROJECTION_MATRIX_CHROMIUM 0x0BA7
 #define GL_PATH_MODELVIEW_CHROMIUM 0x1700
 #define GL_PATH_PROJECTION_CHROMIUM 0x1701
 #endif
 
+#ifndef GL_KHR_blend_equation_advanced
+#define GL_KHR_blend_equation_advanced 1
+#define GL_COLORBURN_KHR                  0x929A
+#define GL_COLORDODGE_KHR                 0x9299
+#define GL_DARKEN_KHR                     0x9297
+#define GL_DIFFERENCE_KHR                 0x929E
+#define GL_EXCLUSION_KHR                  0x92A0
+#define GL_HARDLIGHT_KHR                  0x929B
+#define GL_HSL_COLOR_KHR                  0x92AF
+#define GL_HSL_HUE_KHR                    0x92AD
+#define GL_HSL_LUMINOSITY_KHR             0x92B0
+#define GL_HSL_SATURATION_KHR             0x92AE
+#define GL_LIGHTEN_KHR                    0x9298
+#define GL_MULTIPLY_KHR                   0x9294
+#define GL_OVERLAY_KHR                    0x9296
+#define GL_SCREEN_KHR                     0x9295
+#define GL_SOFTLIGHT_KHR                  0x929C
+#endif /* GL_KHR_blend_equation_advanced */
+
+#ifndef GL_KHR_blend_equation_advanced_coherent
+#define GL_KHR_blend_equation_advanced_coherent 1
+#define GL_BLEND_ADVANCED_COHERENT_KHR    0x9285
+#endif /* GL_KHR_blend_equation_advanced_coherent */
+
 #ifndef GL_EXT_disjoint_timer_query
 #define GL_EXT_disjoint_timer_query 1
 #define GL_QUERY_COUNTER_BITS_EXT         0x8864
 #define GL_TIME_ELAPSED_EXT               0x88BF
 #define GL_TIMESTAMP_EXT                  0x8E28
 #define GL_GPU_DISJOINT_EXT               0x8FBB
 #endif
 
 #define GL_GLEXT_PROTOTYPES 1
 
@@ skipping 134 matching lines @@
 #elif defined(OS_ANDROID)
 
 GL_EXPORT extern EGLApi* g_current_egl_context;
 GL_EXPORT extern DriverEGL g_driver_egl;
 
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_BINDINGS_H_