RootWindowHostX11: Don't filter jittery mouse moves

A filter was put in place to filter jittery mouse moves a while
back. It worked by disallowing 1 pixel of reversed motion. The purpose
was to make rearranging apps in the app launcher feel smoother,
because those mouse moves were particularly impacted by the
then-jitteryness of the Chromebook Pixel touchpad.

We've since made the Pixel's touchpad not be jittery. Since this
filter does impact legitimate mouse moves, we should remove it.

BUG=344021
R=oshima@chromium.org

Review URL: https://codereview.chromium.org/166603008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252375 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252375
NaCl: Update revision in DEPS, r12779 -> r12790

This pulls in the following Native Client changes:

r12780: (teravest) Remove NACL_REVERSE_CONTROL_TEST
r12781: (jvoung) Add a NaClApp bit "pnacl_mode" and be able to check with sysconf()
r12782: (dschuff) Don't run LLVM regression tests under msys.
r12783: (bradnelson) Drop use of perf_expectations in favor of gasper alerts.
r12785: (mcgrathr) Remove nacl-toolchain-win7-newlib-arm from trybot list
r12786: (jvoung) Add fmod from newlib to PNaCl native libraries.
r12787: (mcgrathr) Update GCC revision in tools/REVISIONS
r12788: (mseaborn) PNaCl: Disable the GCC torture test "alloca-1.c" for all targets
r12789: (jfb) Update TOOL_REVISIONS for PNaCl r12772->r12786
r12790: (mseaborn) Remove definition of the "ppapihook" IRT interface from the NaCl side

BUG=none
TEST=browser_tests and nacl_integration

Review URL: https://codereview.chromium.org/174103002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252376 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252377 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 252377