replace TestPixelRef with bitmap.allocPixels()

This is part of a larger effort to remove unnecessary subclass of pixelref from chrome/blink, to allow for faster evolution/iteration of bitmap/pixelref development in skia.

BUG=

Review URL: https://codereview.chromium.org/138473002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245171 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245171
[MIPS] Define gcc_toolchain in BUILD.gn for Chromium-Linux

Define gcc_toolchain and variables cc, cxx, ar, ld, toolchain_cpu_arch and
toolchain_os for MIPS Linux build of Chromium.

BUG= gclient runhooks fails for MIPS-Linux
TEST= build Chromium for MIPS-Linux

Review URL: https://codereview.chromium.org/138483002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245172 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245172
Datadump on sync_internals output REDACTED instead

When the user request sync events dump on the sync_internals page,
he can check a box to say if he wants to dump also the node content.
If he doesn't check it, then the node is not stringyfied and it returns
a "[Object object]" message.

This changes this behaviour and replaces the message with a "REDACTED",
that looks better on the .csv file and makes it clear that the user
requested this option, insted of being a stringyfier or any other bug.

BUG=333365

Review URL: https://codereview.chromium.org/138563003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245173 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245173