Remove the command buffer method glGetImageivCHROMIUM.

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 5d2a909c0c7496886a6eb7f2c54c8cd2b85dc1d6..9b791dfa78c4098463d25443dd94140abb0610ef 100644
--- a/gpu/command_buffer/cmd_buffer_functions.txt
+++ b/gpu/command_buffer/cmd_buffer_functions.txt
@@ -276,7 +276,6 @@ GL_APICALL void         GL_APIENTRY glGetUniformsES3CHROMIUM (GLidProgram progra
 GL_APICALL GLuint       GL_APIENTRY glCreateImageCHROMIUM (ClientBuffer buffer, GLsizei width, GLsizei height, GLenum internalformat);
 GL_APICALL void         GL_APIENTRY glDestroyImageCHROMIUM (GLuint image_id);
 GL_APICALL GLuint       GL_APIENTRY glCreateGpuMemoryBufferImageCHROMIUM (GLsizei width, GLsizei height, GLenum internalformat, GLenum usage);
-GL_APICALL void         GL_APIENTRY glGetImageivCHROMIUM (GLuint image_id, GLenum param, GLint* data);
 GL_APICALL void         GL_APIENTRY glDescheduleUntilFinishedCHROMIUM (void);
 GL_APICALL void         GL_APIENTRY glGetTranslatedShaderSourceANGLE (GLidShader shader, GLsizeiNotNegative bufsize, GLsizeiOptional* length, char* source);
 GL_APICALL void         GL_APIENTRY glPostSubBufferCHROMIUM (GLint x, GLint y, GLint width, GLint height);