Revert 235835 "Set a base address for chrome_elf to avoid base a..."

> Set a base address for chrome_elf to avoid base address collisions with chrome_dll.
> 
> NOTRY=true
> BUG=318691
> 
> Review URL: https://codereview.chromium.org/75483002

TBR=caitkp@chromium.org

Review URL: https://codereview.chromium.org/75683005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235887 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235887
Whitelist always-on-top app windows for first-party apps

Some first-party apps will be whitelisted to use the alwaysOnTop
property in M32 stable.

BUG=320847, 319521
TESTS=browser_tests (PlatformAppBrowserTest.WindowsApiAlwaysOnTop*)

Review URL: https://codereview.chromium.org/75023002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235888 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235888
Delete app list item from model on install failure

BUG=318139

Review URL: https://codereview.chromium.org/75193004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235889 0039d316-1c4b-4281-b951-d872f2087c98
reland r235647: Add UMA for <webview> APIs: a. ClearData, b. Permission API.

The CL failed on ASAN because of use after free of PermissionInfo object.

BUG=317084
Test=None, UMA only change.

Review URL: https://codereview.chromium.org/75363005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235890 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235890