Rename README.google to README.chromium.

third_party/scons/README.google

-This is a copy of SCons, a Python-based software build tool (that is,
-replacement for Make) that we use for cross-platform builds.
-
-Current version:  1.2.0
-
-Originally obtained from:
-
-    http://www.scons.org/downloads.php
-
-SCons ships under an MIT license.  See the scons-LICENSE file in
-this directory for specifics.
-
-We check in the contents of the scons-local-* package(s) provided
-by the SCons Project.
-
-Before checking in, copy the contents of the version-specific
-"scons-local-{VERSION}" subdirectory to the "scons-local" subdirectory.
-We do this so we can use Subversion to diff and revert imported versions,
-and to make it easier to propagate any local modifications we might make
-to any new versions we check in.
-
-To import a new version of SCons:
-
-- Visit http://www.scons.org/downloads.php
-
-- Download the latest scons-local package.
-
-- Unpack in the current directory:
-
-    $ tar zxf scons-local-{VERSION}.tar.gz
-
-- Copy the contents of the version-specific directory to scons-local:
-
-    $ cp -rf scons-local-{VERSION}/* scons-local
-    $ rm -rf scons-local-{VERSION}
-
-- Update this README.google file to reflect the new version number.
-
-- Check in (after appropriate testing, of course).