Update DevTools Chromium DEPS.

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Change-Id: Iefc946bd75961453562df734472e8ebf28f8ab15
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2117394
Reviewed-by: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>

Author: devtools-ci-autoroll-builder

DEPS

@@ -23,11 +23,11 @@ vars = {
 
   # Chromium build number for unit tests. It should be regularly updated to
   # the content of https://commondatastorage.googleapis.com/chromium-browser-snapshots/Linux_x64/LAST_CHANGE
-  'chromium_linux': '752366',
+  'chromium_linux': '752719',
   # the content of https://commondatastorage.googleapis.com/chromium-browser-snapshots/Win_x64/LAST_CHANGE
-  'chromium_win': '752365',
+  'chromium_win': '752710',
   # the content of https://commondatastorage.googleapis.com/chromium-browser-snapshots/Mac/LAST_CHANGE
-  'chromium_mac': '752361',
+  'chromium_mac': '752700',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.