Remove guards in GrGLInterface::validate() for functions that Chromium used to not provide.

src/gpu/gl/GrGLInterface.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLExtensions.h"
@@ skipping 301 matching lines @@
     }
 
     if (fExtensions.has("GL_KHR_blend_equation_advanced") ||
         fExtensions.has("GL_NV_blend_equation_advanced")) {
         if (nullptr == fFunctions.fBlendBarrier) {
             RETURN_FALSE_INTERFACE
         }
     }
 
     if (fExtensions.has("GL_EXT_discard_framebuffer")) {
-// FIXME: Remove this once Chromium is updated to provide this function
-#if 0
         if (nullptr == fFunctions.fDiscardFramebuffer) {
             RETURN_FALSE_INTERFACE
         }
-#endif
     }
 
     // FBO MSAA
     if (kGL_GrGLStandard == fStandard) {
         // GL 3.0 and the ARB extension have multisample + blit
         if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_ARB_framebuffer_object")) {
             if (nullptr == fFunctions.fRenderbufferStorageMultisample ||
                 nullptr == fFunctions.fBlitFramebuffer) {
                 RETURN_FALSE_INTERFACE
             }
@@ skipping 165 matching lines @@
     if ((kGL_GrGLStandard == fStandard &&
          (glVer >= GR_GL_VER(4,3) || fExtensions.has("GL_ARB_program_interface_query"))) ||
         (kGLES_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,1))) {
         if (nullptr == fFunctions.fGetProgramResourceLocation) {
             RETURN_FALSE_INTERFACE
         }
     }
 
     if (kGLES_GrGLStandard == fStandard || glVer >= GR_GL_VER(4,1) ||
         fExtensions.has("GL_ARB_ES2_compatibility")) {
-#if 0 // Enable this once Chrome gives us the function ptr
         if (nullptr == fFunctions.fGetShaderPrecisionFormat) {
             RETURN_FALSE_INTERFACE
         }
-#endif
     }
 
     if (fExtensions.has("GL_NV_path_rendering") || fExtensions.has("GL_CHROMIUM_path_rendering")) {
         if (nullptr == fFunctions.fMatrixLoadf ||
             nullptr == fFunctions.fMatrixLoadIdentity ||
             nullptr == fFunctions.fPathCommands ||
             nullptr == fFunctions.fPathParameteri ||
             nullptr == fFunctions.fPathParameterf ||
             nullptr == fFunctions.fGenPaths ||
             nullptr == fFunctions.fDeletePaths ||
@@ skipping 259 matching lines @@
 
     if (fExtensions.has("EGL_KHR_image") || fExtensions.has("EGL_KHR_image_base")) {
         if (nullptr == fFunctions.fEGLCreateImage ||
             nullptr == fFunctions.fEGLDestroyImage) {
             RETURN_FALSE_INTERFACE
         }
     }
 
     return true;
 }