Add std:: qualifications to all references to std::string and std::basic_string.
Add std:: qualifications to all references to std::string and std::basic_string.

PiperOrigin-RevId: 325970529
Change-Id: Id596be41afa3a19116d00197773b8a89dd98ebdc

cxxgtxy/tensorflow,cxxgtxy/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aldian/tensorflow,gautam1858/tensorflow,Intel-tensorflow/tensorflow,karllessard/tensorflow,sarvex/tensorflow,freedomtan/tensorflow,frreiss/tensorflow-fred,aldian/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow,gautam1858/tensorflow,paolodedios/tensorflow,yongtang/tensorflow,freedomtan/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_saved_model,yongtang/tensorflow,karllessard/tensorflow,freedomtan/tensorflow,aam-at/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow,aam-at/tensorflow,davidzchen/tensorflow,yongtang/tensorflow,paolodedios/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_saved_model,Intel-Corporation/tensorflow,Intel-tensorflow/tensorflow,aam-at/tensorflow,petewarden/tensorflow,aam-at/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-experimental_link_static_libraries_once,annarev/tensorflow,davidzchen/tensorflow,annarev/tensorflow,annarev/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aam-at/tensorflow,Intel-Corporation/tensorflow,aam-at/tensorflow,paolodedios/tensorflow,freedomtan/tensorflow,sarvex/tensorflow,sarvex/tensorflow,davidzchen/tensorflow,paolodedios/tensorflow,davidzchen/tensorflow,petewarden/tensorflow,frreiss/tensorflow-fred,yongtang/tensorflow,gautam1858/tensorflow,cxxgtxy/tensorflow,sarvex/tensorflow,frreiss/tensorflow-fred,karllessard/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,karllessard/tensorflow,petewarden/tensorflow,tensorflow/tensorflow,Intel-tensorflow/tensorflow,tensorflow/tensorflow-pywrap_saved_model,gautam1858/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_tf_optimizer,yongtang/tensorflow,aldian/tensorflow,annarev/tensorflow,yongtang/tensorflow,annarev/tensorflow,aldian/tensorflow,freedomtan/tensorflow,aam-at/tensorflow,gautam1858/tensorflow,karllessard/tensorflow,tensorflow/tensorflow,freedomtan/tensorflow,davidzchen/tensorflow,frreiss/tensorflow-fred,davidzchen/tensorflow,paolodedios/tensorflow,davidzchen/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,sarvex/tensorflow,paolodedios/tensorflow,karllessard/tensorflow,cxxgtxy/tensorflow,cxxgtxy/tensorflow,Intel-tensorflow/tensorflow,Intel-Corporation/tensorflow,Intel-Corporation/tensorflow,Intel-Corporation/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow,Intel-tensorflow/tensorflow,aam-at/tensorflow,frreiss/tensorflow-fred,annarev/tensorflow,gautam1858/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow-pywrap_saved_model,paolodedios/tensorflow,karllessard/tensorflow,yongtang/tensorflow,petewarden/tensorflow,davidzchen/tensorflow,sarvex/tensorflow,Intel-tensorflow/tensorflow,aldian/tensorflow,aam-at/tensorflow,petewarden/tensorflow,frreiss/tensorflow-fred,frreiss/tensorflow-fred,petewarden/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,karllessard/tensorflow,frreiss/tensorflow-fred,davidzchen/tensorflow,Intel-tensorflow/tensorflow,tensorflow/tensorflow-pywrap_saved_model,karllessard/tensorflow,cxxgtxy/tensorflow,paolodedios/tensorflow,aam-at/tensorflow,aldian/tensorflow,paolodedios/tensorflow,aam-at/tensorflow,annarev/tensorflow,freedomtan/tensorflow,gautam1858/tensorflow,aam-at/tensorflow,Intel-tensorflow/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow,petewarden/tensorflow,tensorflow/tensorflow,petewarden/tensorflow,Intel-Corporation/tensorflow,Intel-Corporation/tensorflow,davidzchen/tensorflow,davidzchen/tensorflow,sarvex/tensorflow,petewarden/tensorflow,yongtang/tensorflow,aldian/tensorflow,tensorflow/tensorflow,sarvex/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_tf_optimizer,karllessard/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_saved_model,gautam1858/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_saved_model,gautam1858/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_tf_optimizer,freedomtan/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_saved_model,freedomtan/tensorflow,tensorflow/tensorflow-pywrap_saved_model,aldian/tensorflow,frreiss/tensorflow-fred,yongtang/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,Intel-tensorflow/tensorflow,yongtang/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_tf_optimizer,petewarden/tensorflow,yongtang/tensorflow,frreiss/tensorflow-fred,Intel-tensorflow/tensorflow,Intel-Corporation/tensorflow,cxxgtxy/tensorflow,cxxgtxy/tensorflow,freedomtan/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow,gautam1858/tensorflow,gautam1858/tensorflow,annarev/tensorflow