Refactored ChromeViewHostMsg_SearchBoxNavigate IPC message related code.

(1) InstantPage no longer process ChromeViewHostMsg_SearchBoxNavigate IPC message.
(2) SearchIPCRouter now handles ChromeViewHostMsg_SearchBoxNavigate IPC message.
(3) Removed unused params from SearchBox::NavigateToURL() and updated the message handler accordingly.
(4) Deprecated Instant navigation histogram since the HTML popup went away.

BUG=272583
TEST=none

Review URL: https://codereview.chromium.org/26643002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231413 0039d316-1c4b-4281-b951-d872f2087c98
cc: Disable frame production throttling (vsync) in cc_perftests

Disable frame production throttling (vsync) in LayerTreeHostPerfTests.
These tests are trying to measure the performance of the layer tree
management, so limiting them to the arbitrary 200 Hz synthetic vsync
signal of the test harness is counter-productive. Since the tests aim to
run for 2 seconds, this 200 Hz interval causes the commits/s result to
be capped at 400 on the desktop-class perf bots.

BUG=310000

Review URL: https://codereview.chromium.org/47743006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231415 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231413
Hardcode depthPerPixel on win to 8 matching other platforms

BUG=243593
R=jamesr@chromium.org
TEST=fast/media/color-does-not-include-alpha.html passes on windows

Review URL: https://codereview.chromium.org/48323002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231417 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231417