Revert "Merge pull request #20991 from KevinGrandon/land_bug_1026792"

This reverts commit 2713048d434c757939f3d97c45f3f3ebcf717b2d, reversing
changes made to aecb3041c71c5627aea30628ee82fc74e8af0d47.
Bug 1026792 - [Rocketbar] Rocketbar search should be cancelled when the device sleeps, or gets locked. r=daleharvey
Merge pull request #21032 from vingtetun/backout-bug1026792-reland

Backout bug1026792 reland