Remove mojo:: part of mojo::shell:: nested namespace in //shell.

shell/android/run_android_application_function.h

Index: shell/android/run_android_application_function.h
diff --git a/shell/android/run_android_application_function.h b/shell/android/run_android_application_function.h
index 3ed174482d9a78d945abaab6132f328fe5f39c2c..da5b93d46d21c80cbfce669050ece8462208ad48 100644
--- a/shell/android/run_android_application_function.h
+++ b/shell/android/run_android_application_function.h
@@ -8,7 +8,6 @@
 #include "base/android/jni_android.h"
 #include "base/files/file_path.h"
 
-namespace mojo {
 namespace shell {
 
 // Type of the function that we inject from the main .so of the Mojo shell to
@@ -22,6 +21,5 @@ typedef void (*RunAndroidApplicationFn)(JNIEnv* env,
                                         jint j_handle);
 
 }  // namespace shell
-}  // namespace mojo
 
 #endif  // SHELL_ANDROID_RUN_ANDROID_APPLICATION_FUNCTION_H_