IPC messages OWNERS own all content/common/*_message*.h files.

Previously they own *_messages*.h, which missed content_message_generator.h.

With this change, IPC messages OWNERS also own content_messages_generator.h, so
that developers don't need to find another owner to review this file separately.

TBR=jam@chromium.org

Review URL: https://codereview.chromium.org/182283002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253950 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253950
GN: Work on Mac module search path.

This hooks up the rpath for Mac executables. This fixes a bug in iOS GYP generation where the architectures were specified as a string instead of a list.

Also fixes some base files that were out-of-sync from the GYP build.

BUG=345021
TBR=thakis

Review URL: https://codereview.chromium.org/179873008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253952 0039d316-1c4b-4281-b951-d872f2087c98
Adding a fade-out animation to GestureNav overlays.
Making it so GestureNav overlay screenshots fade out instead of disappearing
abruptly when the overscroll gesture finishes. When the sscreenshot completely
matches the content (which should be true in most cases), this creates an
effect of content turning from grayscale to color.

BUG=343914

Review URL: https://codereview.chromium.org/171423008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253953 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253952
Disable accelerated video decode for switchable AMD gpus

BUG=298968

Review URL: https://codereview.chromium.org/183543002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253954 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253954