Upgrade Valgrind to 3.13.0.

Bug: skia:6881
Change-Id: I8c1e4be16f4a79e9aa6fb663337476d0c0fe8c1c
Reviewed-on: https://skia-review.googlesource.com/31024
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
diff --git a/infra/bots/assets/valgrind/VERSION b/infra/bots/assets/valgrind/VERSION
index 62f9457..c793025 100644
--- a/infra/bots/assets/valgrind/VERSION
+++ b/infra/bots/assets/valgrind/VERSION
@@ -1 +1 @@
-6
\ No newline at end of file
+7
\ No newline at end of file
diff --git a/infra/bots/assets/valgrind/create.py b/infra/bots/assets/valgrind/create.py
index 618c235..3f6707d 100755
--- a/infra/bots/assets/valgrind/create.py
+++ b/infra/bots/assets/valgrind/create.py
@@ -22,9 +22,9 @@
 import utils
 
 
-VALGRIND = 'valgrind-3.12.0'
+VALGRIND = 'valgrind-3.13.0'
 TARBALL = '%s.tar.bz2' % VALGRIND
-DOWNLOAD_URL = 'http://valgrind.org/downloads/%s' % TARBALL
+DOWNLOAD_URL = 'ftp://sourceware.org/pub/valgrind/%s' % TARBALL
 TEMP_DIR = os.path.join(tempfile.gettempdir(), 'skia-%s' % VALGRIND)
 INSTALL_DIR = os.path.join(TEMP_DIR, 'valgrind_install')
 
diff --git a/infra/bots/tasks.json b/infra/bots/tasks.json
index 1ef6c49..8695a36 100644
--- a/infra/bots/tasks.json
+++ b/infra/bots/tasks.json
@@ -7188,7 +7188,7 @@
         {
           "name": "skia/bots/valgrind",
           "path": "valgrind",
-          "version": "version:6"
+          "version": "version:7"
         }
       ],
       "dependencies": [
@@ -7240,7 +7240,7 @@
         {
           "name": "skia/bots/valgrind",
           "path": "valgrind",
-          "version": "version:6"
+          "version": "version:7"
         }
       ],
       "dependencies": [
@@ -13950,7 +13950,7 @@
         {
           "name": "skia/bots/valgrind",
           "path": "valgrind",
-          "version": "version:6"
+          "version": "version:7"
         }
       ],
       "dependencies": [
@@ -14002,7 +14002,7 @@
         {
           "name": "skia/bots/valgrind",
           "path": "valgrind",
-          "version": "version:6"
+          "version": "version:7"
         }
       ],
       "dependencies": [
@@ -14054,7 +14054,7 @@
         {
           "name": "skia/bots/valgrind",
           "path": "valgrind",
-          "version": "version:6"
+          "version": "version:7"
         }
       ],
       "dependencies": [