Add PRESUBMIT script to V8

PRESUBMIT.py

-#!/bin/bash
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
 #       with the distribution.
 #     * Neither the name of Google Inc. nor the names of its
 #       contributors may be used to endorse or promote products derived
 #       from this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-# Runs d8 with the given arguments on the device under 'perf' and
-# processes the profiler trace and v8 logs using ll_prof.py.
-# 
-# Usage:
-# > ./tools/android-ll-prof.sh (debug|release) "args to d8" "args to ll_prof.py"
-#
-# The script creates deploy directory deploy/data/local/tmp/v8, copies there
-# the d8 binary either from out/android_arm.release or out/android_arm.debug,
-# and then sync the deploy directory with /data/local/tmp/v8 on the device.
-# You can put JS files in the deploy directory before running the script.
-# Note: $ANDROID_NDK_ROOT must be set.
+"""Top-level presubmit script for V8.
 
-MODE=$1
-RUN_ARGS=$2
-LL_PROF_ARGS=$3
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details about the presubmit API built into gcl.
+"""
 
-BASE=`cd $(dirname "$0")/..; pwd`
-DEPLOY="$BASE/deploy"
+def _V8PresubmitChecks(input_api, output_api):
+  """Runs the V8 presubmit checks."""
+  import sys
+  sys.path.append(input_api.os_path.join(
+        input_api.PresubmitLocalPath(), 'tools'))
+  from presubmit import CppLintProcessor
+  from presubmit import SourceProcessor
 
-set +e
-mkdir -p "$DEPLOY/data/local/tmp/v8"
+  results = []
+  if not CppLintProcessor().Run(input_api.PresubmitLocalPath()):
+    results.append(output_api.PresubmitError("C++ lint check failed"))
+  if not SourceProcessor().Run(input_api.PresubmitLocalPath()):
+    results.append(output_api.PresubmitError(
+        "Copyright header and trailing whitespaces check failed"))
+  return results
 
-cp "$BASE/out/android_arm.$MODE/d8" "$DEPLOY/data/local/tmp/v8/d8"
 
-adb -p "$DEPLOY" sync data
+def _CommonChecks(input_api, output_api):
+  """Checks common to both upload and commit."""
+  results = []
+  results.extend(input_api.canned_checks.CheckOwners(
+      input_api, output_api, source_file_filter=None))
+  return results
 
-adb shell "cd /data/local/tmp/v8;\
-           perf record -R -e cycles -c 10000 -f -i \
-           ./d8 --ll_prof --gc-fake-mmap=/data/local/tmp/__v8_gc__ $RUN_ARGS"
 
-adb pull /data/local/tmp/v8/v8.log .
-adb pull /data/local/tmp/v8/v8.log.ll .
-adb pull /data/perf.data .
+def CheckChangeOnUpload(input_api, output_api):
+  results = []
+  results.extend(_CommonChecks(input_api, output_api))
+  return results
 
-ARCH=arm-linux-androideabi-4.6
-TOOLCHAIN="${ANDROID_NDK_ROOT}/toolchains/$ARCH/prebuilt/linux-x86/bin"
 
-$BASE/tools/ll_prof.py --host-root="$BASE/deploy" \
-                       --gc-fake-mmap=/data/local/tmp/__v8_gc__ \
-                       --objdump="$TOOLCHAIN/arm-linux-androideabi-objdump" \
-                       $LL_PROF_ARGS
+def CheckChangeOnCommit(input_api, output_api):
+  results = []
+  results.extend(_CommonChecks(input_api, output_api))
+  results.extend(input_api.canned_checks.CheckChangeHasDescription(
+      input_api, output_api))
+  results.extend(_V8PresubmitChecks(input_api, output_api))
+  return results