Add a command to lose the context

BUG=166020


Review URL: https://chromiumcodereview.appspot.com/11568029

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@173441 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/gpu/command_buffer/cmd_buffer_functions.txt b/gpu/command_buffer/cmd_buffer_functions.txt
index fb53030a..2664631 100644
--- a/gpu/command_buffer/cmd_buffer_functions.txt
+++ b/gpu/command_buffer/cmd_buffer_functions.txt
@@ -206,3 +206,6 @@
 GL_APICALL void         GL_APIENTRY glAsyncTexSubImage2DCHROMIUM (GLenumTextureTarget target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenumTextureFormat format, GLenumPixelType type, const void* data);
 GL_APICALL void         GL_APIENTRY glAsyncTexImage2DCHROMIUM (GLenumTextureTarget target, GLint level, GLintTextureInternalFormat internalformat, GLsizei width, GLsizei height, GLintTextureBorder border, GLenumTextureFormat format, GLenumPixelType type, const void* pixels);
 GL_APICALL void         GL_APIENTRY glDiscardFramebufferEXT (GLenum target, GLsizei count, const GLenum* attachments);
+GL_APICALL void         GL_APIENTRY glLoseContextCHROMIUM (GLenum current, GLenum other);
+
+