Remove long gomacc command-line for Mac builds.

build/sanitize-mac-build-log.sed

 #!/bin/echo Use sanitize-mac-build-log.sh or sed -f
 
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Use this sed script to reduce a Mac build log into something readable.
 
 # Drop uninformative lines.
 /^distcc/d
 /^Check dependencies/d
 /^    setenv /d
 /^    cd /d
 /^make: Nothing to be done/d
 /^$/d
 
 # Xcode prints a short "compiling foobar.o" line followed by the lengthy
 # full command line.  These deletions drop the command line.
 \|^    /Developer/usr/bin/|d
 \|^    /Developer/Library/PrivateFrameworks/DevToolsCore.framework/|d
 \|^    /Developer/Library/Xcode/Plug-ins/CoreBuildTasks.xcplugin/|d
 
+# Drop any goma command lines as well.
+\|^    .*/gomacc |d
+
 # And, if you've overridden something from your own bin directory, remove those
 # full command lines, too.
 \|^    /Users/[^/]*/bin/|d
 
 # There's already a nice note for bindings, don't need the command line.
 \|^python scripts/rule_binding.py|d
 
 # Shorten the "compiling foobar.o" line.
 s|^Distributed-CompileC \(.*\) normal i386 c++ com.apple.compilers.gcc.4_2|    CC \1|
 s|^CompileC \(.*\) normal i386 c++ com.apple.compilers.gcc.4_2|    CC \1|