Browser: Fix layouts

* Fix crash on screen rotation
* Correct indentation
* QC tab to primary color

Change-Id: I4ee608bd5d2ad33439c723298ed97eed235a3e01
Revert "Fix Incognito mode crash in AOSP browser"

This reverts commit 9eceb968f7151450f6be870641822e3b6927f143.
Revert "Fix a crash when creating an incognito tab."

This reverts commit 9ab7cb7dae990a6530087c0a6bd0413f04c4eaa5.
Revert "Fix a crash when creating an incognito tab in the quick controls mode."

This reverts commit 2bdd8d1d98f43cb3f861e16315f83eff6beed909.
Implement client-side incognito mode

Since WebView deprecated privateBrowsing in API 17 (and killed it
for good in API 19), we were left without incognito in the Browser
app. Follow the docs' recommendations and implement it with "manual"
control of privacy-related engine options

* Internally track incognito state for tabs
* Disable all forms of storage and cache on private webviews
* Disable all cookie activity while an incognito tab is active
* Stop trying to use the deprecated "privateBrowsing" argument
  when creating webViews, always set to false

Change-Id: I23f2e34ee125635bba8981f0711ba4986a9beaab
Show a startup page in incognito mode

Change-Id: Ib1d4be6890c81b73a46f026b6fcbb2f1e8de567d