Strict import formatting (grouping and granularity) (#30325)

* strict imports formatting

* Reformat all imports

components/background_hang_monitor/background_hang_monitor.rs

@@ -2,25 +2,24 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-use crate::sampler::{NativeStack, Sampler};
-use crossbeam_channel::{after, never, select, unbounded, Receiver, Sender};
-use ipc_channel::ipc::{IpcReceiver, IpcSender};
-use ipc_channel::router::ROUTER;
-use log::warn;
-use msg::constellation_msg::MonitoredComponentId;
-use msg::constellation_msg::{
-    BackgroundHangMonitor, BackgroundHangMonitorClone, BackgroundHangMonitorExitSignal,
-    BackgroundHangMonitorRegister,
-};
-use msg::constellation_msg::{
-    BackgroundHangMonitorControlMsg, HangAlert, HangAnnotation, HangMonitorAlert,
-};
 use std::cell::Cell;
 use std::collections::{HashMap, VecDeque};
 use std::sync::{Arc, Weak};
 use std::thread;
 use std::time::{Duration, Instant};
 
+use crossbeam_channel::{after, never, select, unbounded, Receiver, Sender};
+use ipc_channel::ipc::{IpcReceiver, IpcSender};
+use ipc_channel::router::ROUTER;
+use log::warn;
+use msg::constellation_msg::{
+    BackgroundHangMonitor, BackgroundHangMonitorClone, BackgroundHangMonitorControlMsg,
+    BackgroundHangMonitorExitSignal, BackgroundHangMonitorRegister, HangAlert, HangAnnotation,
+    HangMonitorAlert, MonitoredComponentId,
+};
+
+use crate::sampler::{NativeStack, Sampler};
+
 #[derive(Clone)]
 pub struct HangMonitorRegister {
     sender: Weak<Sender<(MonitoredComponentId, MonitoredComponentMsg)>>,

components/background_hang_monitor/sampler.rs

@@ -2,9 +2,10 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
+use std::ptr;
+
 use backtrace;
 use msg::constellation_msg::{HangProfile, HangProfileSymbol};
-use std::ptr;
 
 const MAX_NATIVE_FRAMES: usize = 1024;
 

components/background_hang_monitor/sampler_linux.rs

@@ -4,20 +4,18 @@
 
 #![allow(unsafe_code)]
 
-use crate::sampler::{NativeStack, Sampler};
+use std::cell::UnsafeCell;
+use std::sync::atomic::{AtomicPtr, Ordering};
+use std::{io, mem, process, ptr, thread};
+
 use libc;
 use nix::sys::signal::{sigaction, SaFlags, SigAction, SigHandler, SigSet, Signal};
-use std::cell::UnsafeCell;
-use std::io;
-use std::mem;
-use std::process;
-use std::ptr;
-use std::sync::atomic::{AtomicPtr, Ordering};
-use std::thread;
 use unwind_sys::{
     unw_cursor_t, unw_get_reg, unw_init_local, unw_step, UNW_ESUCCESS, UNW_REG_IP, UNW_REG_SP,
 };
 
+use crate::sampler::{NativeStack, Sampler};
+
 // Hack to workaround broken libunwind pkg-config contents for <1.1-3ubuntu.1.
 // https://bugs.launchpad.net/ubuntu/+source/libunwind/+bug/1336912
 #[link(name = "lzma")]

components/background_hang_monitor/sampler_mac.rs

@@ -2,11 +2,11 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
+use std::{panic, process};
+
+use {libc, mach};
+
 use crate::sampler::{Address, NativeStack, Registers, Sampler};
-use libc;
-use mach;
-use std::panic;
-use std::process;
 
 type MonitoredThreadId = mach::mach_types::thread_act_t;
 

components/background_hang_monitor/tests/hang_monitor_tests.rs

@@ -4,21 +4,19 @@
 
 #![allow(unused_imports)]
 
-use background_hang_monitor::HangMonitorRegister;
-use ipc_channel::ipc;
-use msg::constellation_msg::ScriptHangAnnotation;
-use msg::constellation_msg::TEST_PIPELINE_ID;
-use msg::constellation_msg::{
-    BackgroundHangMonitorControlMsg, BackgroundHangMonitorExitSignal, HangAlert, HangAnnotation,
-    HangMonitorAlert,
-};
-use msg::constellation_msg::{MonitoredComponentId, MonitoredComponentType};
 use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::Arc;
-use std::sync::Mutex;
+use std::sync::{Arc, Mutex};
 use std::thread;
 use std::time::Duration;
 
+use background_hang_monitor::HangMonitorRegister;
+use ipc_channel::ipc;
+use msg::constellation_msg::{
+    BackgroundHangMonitorControlMsg, BackgroundHangMonitorExitSignal, HangAlert, HangAnnotation,
+    HangMonitorAlert, MonitoredComponentId, MonitoredComponentType, ScriptHangAnnotation,
+    TEST_PIPELINE_ID,
+};
+
 lazy_static::lazy_static! {
     static ref SERIAL: Mutex<()> = Mutex::new(());
 }