Make javac.py output colorful

build/android/gyp/util/build_utils.py

Index: build/android/gyp/util/build_utils.py
diff --git a/build/android/gyp/util/build_utils.py b/build/android/gyp/util/build_utils.py
index 36c83193c1ad3347b6a4b563b14ac5c76552b087..4876539eb252b8f89fa91c65256b7389d4c6af25 100644
--- a/build/android/gyp/util/build_utils.py
+++ b/build/android/gyp/util/build_utils.py
@@ -11,6 +11,11 @@ import shutil
 import subprocess
 import sys
 
+CHROMIUM_SRC = os.path.join(os.path.dirname(__file__),
+                            os.pardir, os.pardir, os.pardir, os.pardir)
+COLORAMA_ROOT = os.path.join(CHROMIUM_SRC,
+                             'third_party', 'colorama', 'src')
+
 
 def MakeDirectory(dir_path):
   try:
@@ -100,7 +105,10 @@ class CalledProcessError(Exception):
 # This can be used in most cases like subprocess.check_output(). The output,
 # particularly when the command fails, better highlights the command's failure.
 # If the command fails, raises a build_utils.CalledProcessError.
-def CheckOutput(args, cwd=None, print_stdout=False, print_stderr=True,
+def CheckOutput(args, cwd=None,
+                print_stdout=False, print_stderr=True,
+                stdout_filter=None,
+                stderr_filter=None,
                 fail_func=lambda returncode, stderr: returncode != 0):
   if not cwd:
     cwd = os.getcwd()
@@ -109,6 +117,12 @@ def CheckOutput(args, cwd=None, print_stdout=False, print_stderr=True,
       stdout=subprocess.PIPE, stderr=subprocess.PIPE, cwd=cwd)
   stdout, stderr = child.communicate()
 
+  if stdout_filter is not None:
+    stdout = stdout_filter(stdout)
+
+  if stderr_filter is not None:
+    stderr = stderr_filter(stderr)
+
   if fail_func(child.returncode, stderr):
     raise CalledProcessError(cwd, args, stdout + stderr)