[roll] Roll chromium version:73.0.3649.0

Test: CQ

Change-Id: I0a78c6d7abbd6199c291fdaed4b65c76b02a569e
diff --git a/tools/cipd.ensure b/tools/cipd.ensure
index ba8ae9c..d6eaef7 100644
--- a/tools/cipd.ensure
+++ b/tools/cipd.ensure
@@ -10,8 +10,8 @@
 
 # Chromium amd64 / x64 implementation
 @Subdir third_party/chromium/arch/x64
-chromium/fuchsia/webrunner-amd64 R4JKYqOk-IDkRY5-PjZFuxs60QX60IiNexPLLIjQpdEC
+chromium/fuchsia/webrunner-amd64 46fyzo0reYVX3ARnZHgYZNWkMWNZHLfdeSiaHE0YV3YC
 
 # Chromium arm64 / aarch64 implementation
 @Subdir third_party/chromium/arch/arm64
-chromium/fuchsia/webrunner-arm64 WF2oxIdoauuZ2IDeLcxPtkOUMgMPkFBg_Smeslgz69cC
+chromium/fuchsia/webrunner-arm64 LbCF_QRWVvsZffGFGJGqD5J7vkqHckUgfVXOB-1cGgsC