GL_SAMPLER_2D_RECT_ARB  407 gpu/GLES2/gl2extchromium.h #define GL_SAMPLER_2D_RECT_ARB 0x8B63
GL_SAMPLER_2D_RECT_ARB 1926 ppapi/lib/gl/include/GLES2/gl2ext.h #define GL_SAMPLER_2D_RECT_ARB 0x8B63