am 58c3d985: am fde9746a: Clear parent/child tab relationships when clearing history.

Merge commit '58c3d985682495d6563cafe21fa19a47ef349971'

* commit '58c3d985682495d6563cafe21fa19a47ef349971':
  Clear parent/child tab relationships when clearing history.

diff --cc src/com/android/browser/BrowserActivity.java
Simple merge

diff --cc src/com/android/browser/BrowserBookmarksPage.java
Simple merge

diff --cc src/com/android/browser/BrowserHistoryPage.java
Simple merge