Roll DEPS to pick up removal of 32-bit linkers in SDK.

We want to pick up this change: https://gerrit.chromium.org/gerrit/#/c/67837/
The SDK added 32-bit linkers to build-tools with SDK 19. We use 64-bit linkers
in the ndk directory.

BUG=
NOTRY=True

Review URL: https://codereview.chromium.org/74133004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235792 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -480,7 +480,7 @@ deps_os = {
   "android": {
     "src/third_party/android_tools":
       Var("chromium_git") + "/android_tools.git" +
-      "@b3b75e0951a2fcb8380d5f74144ec34a654ce6b2",
+      "@ff871feb88741a524587ed348504c562b733a6f8",
 
     "src/third_party/aosp":
       "/trunk/deps/third_party/aosp@148330",