[telemetry] Sort imports in Telemetry and its dependents.

tools/telemetry/telemetry/core/platform/mac_platform_backend.py

Index: tools/telemetry/telemetry/core/platform/mac_platform_backend.py
diff --git a/tools/telemetry/telemetry/core/platform/mac_platform_backend.py b/tools/telemetry/telemetry/core/platform/mac_platform_backend.py
index ceadc1489f9cf70d0f5a018b4acfea5b086d1a1d..b50f9bde2c14a5c291b4f7ba22e310fa362b394a 100644
--- a/tools/telemetry/telemetry/core/platform/mac_platform_backend.py
+++ b/tools/telemetry/telemetry/core/platform/mac_platform_backend.py
@@ -8,11 +8,11 @@ import platform
 import sys
 import time
 
-from telemetry import decorators
 from telemetry.core.platform import platform_backend
 from telemetry.core.platform import posix_platform_backend
-from telemetry.core.platform import process_statistic_timeline_data
 from telemetry.core.platform.power_monitor import powermetrics_power_monitor
+from telemetry.core.platform import process_statistic_timeline_data
+from telemetry import decorators
 
 try:
   import resource  # pylint: disable=F0401