Disable power monitoring on all desktop platforms

telemetry/telemetry/internal/platform/mac_platform_backend.py

Index: telemetry/telemetry/internal/platform/mac_platform_backend.py
diff --git a/telemetry/telemetry/internal/platform/mac_platform_backend.py b/telemetry/telemetry/internal/platform/mac_platform_backend.py
index 2e434bd587ef2a1203b49df347afa87b7415f12d..fbb6fa6634ac2ead669b04b1b8a9018d0629f568 100644
--- a/telemetry/telemetry/internal/platform/mac_platform_backend.py
+++ b/telemetry/telemetry/internal/platform/mac_platform_backend.py
@@ -190,7 +190,9 @@ class MacPlatformBackend(posix_platform_backend.PosixPlatformBackend):
     assert p.returncode == 0, 'Failed to flush system cache'
 
   def CanMonitorPower(self):
-    return self._power_monitor.CanMonitorPower()
+    # TODO(charliea): This is a stopgap until all desktop power monitoring code
+    # can be removed. (crbug.com/763263)
+    return False
 
   def CanMeasurePerApplicationPower(self):
     return self._power_monitor.CanMeasurePerApplicationPower()