GPU process clients can perform a "shallow" finish.

gpu/command_buffer/client/gles2_implementation_autogen.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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // DO NOT EDIT!
 
 // This file is included by gles2_implementation.h to declare the
 // GL api functions.
@@ skipping 102 matching lines @@
 
 virtual void DrawElements(
     GLenum mode, GLsizei count, GLenum type, const void* indices) OVERRIDE;
 
 virtual void Enable(GLenum cap) OVERRIDE;
 
 virtual void Finish() OVERRIDE;
 
 virtual void Flush() OVERRIDE;
 
-virtual void ShallowFlushCHROMIUM() OVERRIDE;
-
 virtual void FramebufferRenderbuffer(
     GLenum target, GLenum attachment, GLenum renderbuffertarget,
     GLuint renderbuffer) OVERRIDE;
 
 virtual void FramebufferTexture2D(
     GLenum target, GLenum attachment, GLenum textarget, GLuint texture,
     GLint level) OVERRIDE;
 
 virtual void FrontFace(GLenum mode) OVERRIDE;
 
@@ skipping 114 matching lines @@
 virtual void Scissor(GLint x, GLint y, GLsizei width, GLsizei height) OVERRIDE;
 
 virtual void ShaderBinary(
     GLsizei n, const GLuint* shaders, GLenum binaryformat, const void* binary,
     GLsizei length) OVERRIDE;
 
 virtual void ShaderSource(
     GLuint shader, GLsizei count, const GLchar* const* str,
     const GLint* length) OVERRIDE;
 
+virtual void ShallowFinishCHROMIUM() OVERRIDE;
+
+virtual void ShallowFlushCHROMIUM() OVERRIDE;
+
 virtual void StencilFunc(GLenum func, GLint ref, GLuint mask) OVERRIDE;
 
 virtual void StencilFuncSeparate(
     GLenum face, GLenum func, GLint ref, GLuint mask) OVERRIDE;
 
 virtual void StencilMask(GLuint mask) OVERRIDE;
 
 virtual void StencilMaskSeparate(GLenum face, GLuint mask) OVERRIDE;
 
 virtual void StencilOp(GLenum fail, GLenum zfail, GLenum zpass) OVERRIDE;
@@ skipping 271 matching lines @@
 virtual void LoseContextCHROMIUM(GLenum current, GLenum other) OVERRIDE;
 
 virtual GLuint InsertSyncPointCHROMIUM() OVERRIDE;
 
 virtual void WaitSyncPointCHROMIUM(GLuint sync_point) OVERRIDE;
 
 virtual void DrawBuffersEXT(GLsizei count, const GLenum* bufs) OVERRIDE;
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_AUTOGEN_H_