Roll chromium_revision 598c3e9..601e6f3

Relevant changes:
* src/buildtools: 451dcd0..da0df3f
* src/third_party/openmax_dl: c01d587..81318c1
* src/tools/swarming_client: c698ea2..bdad118
Details: https://chromium.googlesource.com/chromium/src/+/598c3e9..601e6f3/DEPS

Clang version was not updated in this roll.

TBR=pbos@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/35059004

Cr-Commit-Position: refs/heads/master@{#8305}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8305 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/DEPS b/DEPS
index b3c4ce7..5bbcd0d 100644
--- a/DEPS
+++ b/DEPS
@@ -6,7 +6,7 @@
 vars = {
   'extra_gyp_flag': '-Dextra_gyp_flag=0',
   'chromium_git': 'https://chromium.googlesource.com',
-  'chromium_revision': '598c3e9b0e32c0e11debfa2d2da79586c5576a59',
+  'chromium_revision': '601e6f32704fed600914fd5198c24395c4dc36f5',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than