Update from https://crrev.com/312398

gpu/command_buffer/cmd_buffer_functions.txt

Index: gpu/command_buffer/cmd_buffer_functions.txt
diff --git a/gpu/command_buffer/cmd_buffer_functions.txt b/gpu/command_buffer/cmd_buffer_functions.txt
index f82248c8fc80a534cf5eb439ea8f4283dd52b1c8..71e99e18fe9f3e17b39f338aadee419c677e39cc 100644
--- a/gpu/command_buffer/cmd_buffer_functions.txt
+++ b/gpu/command_buffer/cmd_buffer_functions.txt
@@ -24,6 +24,10 @@ GL_APICALL void         GL_APIENTRY glBufferData (GLenumBufferTarget target, GLs
 GL_APICALL void         GL_APIENTRY glBufferSubData (GLenumBufferTarget target, GLintptrNotNegative offset, GLsizeiptr size, const void* data);
 GL_APICALL GLenum       GL_APIENTRY glCheckFramebufferStatus (GLenumFrameBufferTarget target);
 GL_APICALL void         GL_APIENTRY glClear (GLbitfield mask);
+GL_APICALL void         GL_APIENTRY glClearBufferfi (GLenumBufferfv buffer, GLint drawbuffers, GLfloat depth, GLint stencil);
+GL_APICALL void         GL_APIENTRY glClearBufferfv (GLenumBufferfv buffer, GLint drawbuffers, const GLfloat* value);
+GL_APICALL void         GL_APIENTRY glClearBufferiv (GLenumBufferiv buffer, GLint drawbuffers, const GLint* value);
+GL_APICALL void         GL_APIENTRY glClearBufferuiv (GLenumBufferuiv buffer, GLint drawbuffers, const GLuint* value);
 GL_APICALL void         GL_APIENTRY glClearColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
 GL_APICALL void         GL_APIENTRY glClearDepthf (GLclampf depth);
 GL_APICALL void         GL_APIENTRY glClearStencil (GLint s);