[Files.app] Remove OK and Cancel buttons in task picker dialog

BUG=223574
TEST=manually tested

Review URL: https://codereview.chromium.org/108163005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243526 0039d316-1c4b-4281-b951-d872f2087c98
Removing Get*UserProfileOrOffTheRecord() calls from ProfileManager

Finally - the first two functions which go for good!

BUG=322682
TEST=covered by other unit tests

Review URL: https://codereview.chromium.org/109823010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243527 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243526
Implement sampling profiler (chromium side change)

Trace-viewer side change is here: https://codereview.appspot.com/39310043

Screenshot of the profiler: http://haraken.info/null/sampling_tracing.png

Design document: https://docs.google.com/a/google.com/document/d/1j39sbA9ECTwFFlxbhSD1EvJnGfYeS5EUJ05yxuku6VY/edit

TBR=phajdan.jr
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=242671

Review URL: https://codereview.chromium.org/109933006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243528 0039d316-1c4b-4281-b951-d872f2087c98
Fix NTP nav dots measurement.

The old approach chose the nav dot width by measuring a phantom
dot containing the string "Most Visited," but only when the Most
Visited dot is shown. This approach fails when it isn't shown,
or when the string "Apps" is longer than the string "Most Visited"
in the user's local language.

Screenshots on the bug.

BUG=248495

Review URL: https://codereview.chromium.org/110523004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243529 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243529