Revert of Remove validation exceptions in GrGLInterface. These are all now set by Chromium.

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 97 matching lines @@
         RETURN_FALSE_INTERFACE
     }
 
     // functions that are always required
     if (NULL == fFunctions.fActiveTexture ||
         NULL == fFunctions.fAttachShader ||
         NULL == fFunctions.fBindAttribLocation ||
         NULL == fFunctions.fBindBuffer ||
         NULL == fFunctions.fBindTexture ||
         NULL == fFunctions.fBlendColor ||      // -> GL >= 1.4 or extension, ES >= 2.0
+#if 0
+        // TODO: Re-enable validation for fBlendEquation when Chrome has it hooked up.
         NULL == fFunctions.fBlendEquation ||   // -> GL >= 1.4 or extension, ES >= 2.0
+#endif
         NULL == fFunctions.fBlendFunc ||
         NULL == fFunctions.fBufferData ||
         NULL == fFunctions.fBufferSubData ||
         NULL == fFunctions.fClear ||
         NULL == fFunctions.fClearColor ||
         NULL == fFunctions.fClearStencil ||
         NULL == fFunctions.fColorMask ||
         NULL == fFunctions.fCompileShader ||
         NULL == fFunctions.fCopyTexSubImage2D ||
         NULL == fFunctions.fCreateProgram ||
@@ skipping 139 matching lines @@
                 RETURN_FALSE_INTERFACE
             }
         }
     }
 
     // optional function on desktop before 1.3
     if (kGL_GrGLStandard != fStandard ||
         (glVer >= GR_GL_VER(1,3)) ||
         fExtensions.has("GL_ARB_texture_compression")) {
         if (NULL == fFunctions.fCompressedTexImage2D
+#if 0
             || NULL == fFunctions.fCompressedTexSubImage2D
+#endif
             ) {
             RETURN_FALSE_INTERFACE
         }
     }
 
     // part of desktop GL, but not ES
     if (kGL_GrGLStandard == fStandard &&
         (NULL == fFunctions.fGetTexLevelParameteriv ||
          NULL == fFunctions.fDrawBuffer ||
          NULL == fFunctions.fReadBuffer)) {
@@ skipping 24 matching lines @@
             if (NULL == fFunctions.fTextureBarrier) {
                 RETURN_FALSE_INTERFACE
             }
         }
     } else if (fExtensions.has("GL_NV_texture_barrier")) {
         if (NULL == fFunctions.fTextureBarrier) {
             RETURN_FALSE_INTERFACE
         }
     }
 
+// FIXME: Remove this once Chromium is updated to provide this function
+#if 0
     if (fExtensions.has("GL_KHR_blend_equation_advanced") ||
         fExtensions.has("GL_NV_blend_equation_advanced")) {
         if (NULL == fFunctions.fBlendBarrier) {
             RETURN_FALSE_INTERFACE
         }
     }
+#endif
 
     if (fExtensions.has("GL_EXT_discard_framebuffer")) {
+// FIXME: Remove this once Chromium is updated to provide this function
+#if 0
         if (NULL == 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 (NULL == fFunctions.fRenderbufferStorageMultisample ||
                 NULL == fFunctions.fBlitFramebuffer) {
                 RETURN_FALSE_INTERFACE
             }
@@ skipping 128 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 (NULL == 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 (NULL == fFunctions.fGetShaderPrecisionFormat) {
             RETURN_FALSE_INTERFACE
         }
+#endif
     }
 
     if (fExtensions.has("GL_NV_path_rendering")) {
         if (NULL == fFunctions.fPathCommands ||
             NULL == fFunctions.fPathCoords ||
             NULL == fFunctions.fPathParameteri ||
             NULL == fFunctions.fPathParameterf ||
             NULL == fFunctions.fGenPaths ||
             NULL == fFunctions.fDeletePaths ||
             NULL == fFunctions.fIsPath ||
@@ skipping 27 matching lines @@
     }
 
     if (fExtensions.has("GL_NV_framebuffer_mixed_samples")) {
         if (NULL == fFunctions.fCoverageModulation) {
             RETURN_FALSE_INTERFACE
         }
     }
 
     return true;
 }