diff --git a/DEPS b/DEPS
index c2d74c98b7..8761e917cd 100644
--- a/DEPS
+++ b/DEPS
@@ -10,7 +10,7 @@ vars = {
   'checkout_configuration': 'default',
   'checkout_instrumented_libraries': 'checkout_linux and checkout_configuration == "default"',
   'webrtc_git': 'https://webrtc.googlesource.com',
-  'chromium_revision': 'ddace756be8170a976bdf1b6c8779dfe2d5c47b6',
+  'chromium_revision': '5e8d8448f94a844159946daa7d58cdf4305abb91',
   'boringssl_git': 'https://boringssl.googlesource.com',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
@@ -43,7 +43,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Chromium third_party
   # and whatever else without interference from each other.
-  'chromium_third_party_revision': '15aad43d8b3cd8e38549e345ec6fbef42b3968bd',
+  'chromium_third_party_revision': '156f0a4ab73afb64f487df9982435b28a52ec9b2',
 }
 deps = {
   # TODO(kjellander): Move this to be Android-only once the libevent dependency
@@ -61,7 +61,7 @@ deps = {
     'condition': 'checkout_android',
   },
   'src/ios': {
-    'url': Var('chromium_git') + '/chromium/src/ios' + '@' + 'cac093c4fd11086de4844c8485b245e9d9bbbf93',
+    'url': Var('chromium_git') + '/chromium/src/ios' + '@' + 'dab8567b6642f85e8172790f78f5ce464eb3b170',
     'condition': 'checkout_ios',
   },
   'src/testing':
@@ -175,7 +175,7 @@ deps = {
   'src/third_party/yasm/source/patched-yasm':
     Var('chromium_git') + '/chromium/deps/yasm/patched-yasm.git' + '@' + 'b98114e18d8b9b84586b10d24353ab8616d4c5fc',
   'src/tools':
-    Var('chromium_git') + '/chromium/src/tools' + '@' + '083aa0e99cee185b679aa800e38ec19d0505918e',
+    Var('chromium_git') + '/chromium/src/tools' + '@' + 'c708703ecdb9f7b52686ed57307f42f2d1bca43d',
   'src/tools/gyp':
     Var('chromium_git') + '/external/gyp.git' + '@' + 'd61a9397e668fa9843c4aa7da9e79460fe590bfb',
   'src/tools/swarming_client':
diff --git a/third_party/abseil-cpp/BUILD.gn b/third_party/abseil-cpp/BUILD.gn
index 8dcb9e9b61..eaaf015cab 100644
--- a/third_party/abseil-cpp/BUILD.gn
+++ b/third_party/abseil-cpp/BUILD.gn
@@ -19,13 +19,23 @@ group("default") {
 }
 
 config("absl_include_config") {
-  # Using -isystem instead of include_dirs (-I), so we don't need to suppress
-  # warnings coming from Abseil. Doing so would mask warnings in our own code.
-  if (!is_clang && is_win) {
-    # MSVC doesn't have -isystem, in that case we fallback to include_dirs and
-    # we use the warning suppression flags defined in :absl_default_cflags_cc.
-    include_dirs = [ "." ]
+  # Using -isystem (with clang and GCC) and -imsvc (with clang-cl) instead of
+  # include_dirs (-I), so we don't need to suppress warnings coming from
+  # Abseil. Doing so would mask warnings in our own code.
+  if (is_win) {
+    if (is_clang) {
+      # clang-cl:
+      cflags = [
+        "-imsvc",
+        rebase_path(".", root_build_dir),
+      ]
+    } else {
+      # MSVC doesn't have -isystem, in that case we fallback to include_dirs and
+      # we use the warning suppression flags defined in :absl_default_cflags_cc.
+      include_dirs = [ "." ]
+    }
   } else {
+    # GCC or clang:
     cflags = [
       "-isystem",
       rebase_path(".", root_build_dir),
@@ -111,6 +121,7 @@ config("absl_default_cflags_cc") {
       cflags_cc = [
         "/wd4005",  # macro-redefinition
         "/wd4068",  # unknown pragma
+        "/wd4702",  # unreachable code
       ]
     }
   }