Normalize toolbar management.

Since it was almost all redundant (especially the stack stuff).
Ensure "Files" title present on drawer title in Files app.
DocumentsToolBar > DocumentsToolbar to match toolkit naming.

Bug: 26193264
Change-Id: I92c82c66d936aae3ce0f792581daa12898dfadee
13 files changed
tree: c28c1f1ae7b82f3dbb6db52d64fc4b9516ce5801
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml
  6. lint.xml
  7. wrap_alpha.py