[build] Download gcmole and jsfunfuzz controlled by gclient flag

The corresponding gclient variables are set now via:
https://crrev.com/c/913368

Bug: chromium:772804
Change-Id: I9c96bde3e6cc88d84a320c00d3316a91c48749f7
Reviewed-on: https://chromium-review.googlesource.com/913351Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51240}

DEPS

@@ -6,6 +6,8 @@ vars = {
   'build_for_node': False,
   'checkout_instrumented_libraries': False,
   'chromium_url': 'https://chromium.googlesource.com',
+  'download_gcmole': False,
+  'download_jsfunfuzz': False,
   'download_mips_toolchain': False,
 }
 
@@ -136,21 +138,23 @@ hooks = [
   {
     'name': 'gcmole',
     'pattern': '.',
-    'condition': 'build_for_node != True',
-    # TODO(machenbach): Insert condition and remove GYP_DEFINES dependency.
-    'action': [
-        'python',
-        'v8/tools/gcmole/download_gcmole_tools.py',
+    'condition': 'download_gcmole',
+    'action': [ 'download_from_google_storage',
+                '--bucket', 'chrome-v8-gcmole',
+                '-u', '--no_resume',
+                '-s', 'v8/tools/gcmole/gcmole-tools.tar.gz.sha1',
+                '--platform=linux*',
     ],
   },
   {
     'name': 'jsfunfuzz',
     'pattern': '.',
-    'condition': 'build_for_node != True',
-    # TODO(machenbach): Insert condition and remove GYP_DEFINES dependency.
-    'action': [
-        'python',
-        'v8/tools/jsfunfuzz/download_jsfunfuzz.py',
+    'condition': 'download_jsfunfuzz',
+    'action': [ 'download_from_google_storage',
+                '--bucket', 'chrome-v8-jsfunfuzz',
+                '-u', '--no_resume',
+                '-s', 'v8/tools/jsfunfuzz/jsfunfuzz.tar.gz.sha1',
+                '--platform=linux*',
     ],
   },
   # Pull luci-go binaries (isolate, swarming) using checked-in hashes.

tools/gcmole/download_gcmole_tools.py

-#!/usr/bin/env python
-# Copyright 2016 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import os
-import re
-import subprocess
-
-GCMOLE_PATH = os.path.dirname(os.path.abspath(__file__))
-SHA1_PATH = os.path.join(GCMOLE_PATH, 'gcmole-tools.tar.gz.sha1')
-
-if re.search(r'\bgcmole=1', os.environ.get('GYP_DEFINES', '')):
-  subprocess.check_call([
-    'download_from_google_storage',
-    '-b', 'chrome-v8-gcmole',
-    '-u', '--no_resume',
-    '-s', SHA1_PATH,
-    '--platform=linux*'
-  ])

tools/jsfunfuzz/download_jsfunfuzz.py

-#!/usr/bin/env python
-# Copyright 2016 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import os
-import re
-import subprocess
-
-FUZZ_PATH = os.path.dirname(os.path.abspath(__file__))
-SHA1_PATH = os.path.join(FUZZ_PATH, 'jsfunfuzz.tar.gz.sha1')
-
-if re.search(r'\bjsfunfuzz=1', os.environ.get('GYP_DEFINES', '')):
-  subprocess.check_call([
-    'download_from_google_storage',
-    '-b', 'chrome-v8-jsfunfuzz',
-    '-u', '--no_resume',
-    '-s', SHA1_PATH,
-    '--platform=linux*'
-  ])