diff --git a/client_library/client_dbus.cc b/client_library/client_dbus.cc
index f16b759..4ec76c5 100644
--- a/client_library/client_dbus.cc
+++ b/client_library/client_dbus.cc
@@ -214,7 +214,7 @@
 
 bool DBusUpdateEngineClient::RegisterStatusUpdateHandler(
     StatusUpdateHandler* handler) {
-  if (!base::MessageLoopForIO::current()) {
+  if (!base::MessageLoopCurrent::IsSet()) {
     LOG(FATAL) << "Cannot get UpdateEngineClient outside of message loop.";
     return false;
   }
diff --git a/common/cpu_limiter.cc b/common/cpu_limiter.cc
index 1d14764..5f1ae6f 100644
--- a/common/cpu_limiter.cc
+++ b/common/cpu_limiter.cc
@@ -67,7 +67,7 @@
   if (shares_ == shares)
     return true;
 
-  std::string string_shares = base::IntToString(static_cast<int>(shares));
+  std::string string_shares = base::NumberToString(static_cast<int>(shares));
   LOG(INFO) << "Setting cgroup cpu shares to  " << string_shares;
   if (!utils::WriteFile(
           kCGroupSharesPath, string_shares.c_str(), string_shares.size())) {
diff --git a/common/error_code_utils.cc b/common/error_code_utils.cc
index 5bcbaa4..397cdf2 100644
--- a/common/error_code_utils.cc
+++ b/common/error_code_utils.cc
@@ -171,7 +171,7 @@
       // error codes which should be added here.
   }
 
-  return "Unknown error: " + base::UintToString(static_cast<unsigned>(code));
+  return "Unknown error: " + base::NumberToString(static_cast<unsigned>(code));
 }
 
 }  // namespace utils
diff --git a/common/http_common.cc b/common/http_common.cc
index 5f234b0..c8bac47 100644
--- a/common/http_common.cc
+++ b/common/http_common.cc
@@ -21,6 +21,7 @@
 #include <cstdlib>
 
 #include <base/macros.h>
+#include <base/stl_util.h>
 
 namespace chromeos_update_engine {
 
@@ -56,7 +57,7 @@
 
   bool is_found = false;
   size_t i;
-  for (i = 0; i < arraysize(http_response_table); i++)
+  for (i = 0; i < base::size(http_response_table); i++)
     if ((is_found = (http_response_table[i].code == code)))
       break;
 
@@ -77,7 +78,7 @@
 
   bool is_found = false;
   size_t i;
-  for (i = 0; i < arraysize(http_content_type_table); i++)
+  for (i = 0; i < base::size(http_content_type_table); i++)
     if ((is_found = (http_content_type_table[i].type == type)))
       break;
 
diff --git a/common/http_fetcher_unittest.cc b/common/http_fetcher_unittest.cc
index 237ea20..589579e 100644
--- a/common/http_fetcher_unittest.cc
+++ b/common/http_fetcher_unittest.cc
@@ -29,6 +29,7 @@
 #include <base/location.h>
 #include <base/logging.h>
 #include <base/message_loop/message_loop.h>
+#include <base/stl_util.h>
 #include <base/strings/string_number_conversions.h>
 #include <base/strings/string_util.h>
 #include <base/strings/stringprintf.h>
@@ -1049,7 +1050,7 @@
   unique_ptr<HttpServer> server(this->test_.CreateServer());
   ASSERT_TRUE(server->started_);
 
-  for (size_t c = 0; c < arraysize(kRedirectCodes); ++c) {
+  for (size_t c = 0; c < base::size(kRedirectCodes); ++c) {
     const string url = base::StringPrintf(
         "/redirect/%d/download/%d", kRedirectCodes[c], kMediumLength);
     RedirectTest(server.get(), true, url, this->test_.NewLargeFetcher());
@@ -1066,7 +1067,7 @@
   string url;
   for (int r = 0; r < kDownloadMaxRedirects; r++) {
     url += base::StringPrintf("/redirect/%d",
-                              kRedirectCodes[r % arraysize(kRedirectCodes)]);
+                              kRedirectCodes[r % base::size(kRedirectCodes)]);
   }
   url += base::StringPrintf("/download/%d", kMediumLength);
   RedirectTest(server.get(), true, url, this->test_.NewLargeFetcher());
@@ -1082,7 +1083,7 @@
   string url;
   for (int r = 0; r < kDownloadMaxRedirects + 1; r++) {
     url += base::StringPrintf("/redirect/%d",
-                              kRedirectCodes[r % arraysize(kRedirectCodes)]);
+                              kRedirectCodes[r % base::size(kRedirectCodes)]);
   }
   url += base::StringPrintf("/download/%d", kMediumLength);
   RedirectTest(server.get(), false, url, this->test_.NewLargeFetcher());
diff --git a/common/prefs.cc b/common/prefs.cc
index 7183861..194bbd8 100644
--- a/common/prefs.cc
+++ b/common/prefs.cc
@@ -54,7 +54,7 @@
 }
 
 bool PrefsBase::SetInt64(const string& key, const int64_t value) {
-  return SetString(key, base::Int64ToString(value));
+  return SetString(key, base::NumberToString(value));
 }
 
 bool PrefsBase::GetBoolean(const string& key, bool* value) const {
diff --git a/common/subprocess.cc b/common/subprocess.cc
index 24ad2d9..45dff92 100644
--- a/common/subprocess.cc
+++ b/common/subprocess.cc
@@ -29,6 +29,7 @@
 #include <base/bind.h>
 #include <base/logging.h>
 #include <base/posix/eintr_wrapper.h>
+#include <base/stl_util.h>
 #include <base/strings/string_util.h>
 #include <base/strings/stringprintf.h>
 #include <brillo/process.h>
@@ -122,7 +123,7 @@
     bytes_read = 0;
     bool eof;
     bool ok = utils::ReadAll(
-        record->stdout_fd, buf, arraysize(buf), &bytes_read, &eof);
+        record->stdout_fd, buf, base::size(buf), &bytes_read, &eof);
     record->stdout.append(buf, bytes_read);
     if (!ok || eof) {
       // There was either an error or an EOF condition, so we are done watching
diff --git a/connection_manager.cc b/connection_manager.cc
index ad7e5f6..fe43f37 100644
--- a/connection_manager.cc
+++ b/connection_manager.cc
@@ -89,7 +89,8 @@
   if (device_policy->GetAllowedConnectionTypesForUpdate(&allowed_types)) {
     // The update setting is enforced by the device policy.
 
-    if (!base::ContainsKey(allowed_types, shill::kTypeCellular)) {
+    // TODO(crbug.com/1054279): Use base::Contains after uprev to r680000.
+    if (allowed_types.find(shill::kTypeCellular) == allowed_types.end()) {
       LOG(INFO) << "Disabling updates over cellular connection as it's not "
                    "allowed in the device policy.";
       return false;
diff --git a/libcurl_http_fetcher.cc b/libcurl_http_fetcher.cc
index 4bea4ef..d317d48 100644
--- a/libcurl_http_fetcher.cc
+++ b/libcurl_http_fetcher.cc
@@ -80,7 +80,7 @@
 #endif  // __ANDROID__
   LibcurlHttpFetcher* fetcher = static_cast<LibcurlHttpFetcher*>(clientp);
   // Stop watching the socket before closing it.
-  for (size_t t = 0; t < arraysize(fetcher->fd_controller_maps_); ++t) {
+  for (size_t t = 0; t < base::size(fetcher->fd_controller_maps_); ++t) {
     fetcher->fd_controller_maps_[t].erase(item);
   }
 
@@ -676,7 +676,7 @@
 
   // We should iterate through all file descriptors up to libcurl's fd_max or
   // the highest one we're tracking, whichever is larger.
-  for (size_t t = 0; t < arraysize(fd_controller_maps_); ++t) {
+  for (size_t t = 0; t < base::size(fd_controller_maps_); ++t) {
     if (!fd_controller_maps_[t].empty())
       fd_max = max(fd_max, fd_controller_maps_[t].rbegin()->first);
   }
@@ -694,7 +694,7 @@
         is_exc || (FD_ISSET(fd, &fd_write) != 0)  // track 1 -- write
     };
 
-    for (size_t t = 0; t < arraysize(fd_controller_maps_); ++t) {
+    for (size_t t = 0; t < base::size(fd_controller_maps_); ++t) {
       bool tracked =
           fd_controller_maps_[t].find(fd) != fd_controller_maps_[t].end();
 
@@ -775,7 +775,7 @@
   MessageLoop::current()->CancelTask(timeout_id_);
   timeout_id_ = MessageLoop::kTaskIdNull;
 
-  for (size_t t = 0; t < arraysize(fd_controller_maps_); ++t) {
+  for (size_t t = 0; t < base::size(fd_controller_maps_); ++t) {
     fd_controller_maps_[t].clear();
   }
 
diff --git a/omaha_request_params.cc b/omaha_request_params.cc
index b6c18a6..8863392 100644
--- a/omaha_request_params.cc
+++ b/omaha_request_params.cc
@@ -25,6 +25,7 @@
 #include <vector>
 
 #include <base/files/file_util.h>
+#include <base/stl_util.h>
 #include <base/strings/string_util.h>
 #include <base/strings/stringprintf.h>
 #include <brillo/key_value_store.h>
@@ -217,7 +218,7 @@
 }
 
 int OmahaRequestParams::GetChannelIndex(const string& channel) const {
-  for (size_t t = 0; t < arraysize(kChannelsByStability); ++t)
+  for (size_t t = 0; t < base::size(kChannelsByStability); ++t)
     if (channel == kChannelsByStability[t])
       return t;
 
diff --git a/payload_consumer/delta_performer_integration_test.cc b/payload_consumer/delta_performer_integration_test.cc
index f1a492b..af6682a 100644
--- a/payload_consumer/delta_performer_integration_test.cc
+++ b/payload_consumer/delta_performer_integration_test.cc
@@ -25,6 +25,7 @@
 
 #include <base/files/file_path.h>
 #include <base/files/file_util.h>
+#include <base/stl_util.h>
 #include <base/strings/string_util.h>
 #include <base/strings/stringprintf.h>
 #include <google/protobuf/repeated_field.h>
@@ -848,7 +849,7 @@
 
   brillo::Blob updated_kernel_partition;
   EXPECT_TRUE(utils::ReadFile(state->result_kernel, &updated_kernel_partition));
-  ASSERT_GE(updated_kernel_partition.size(), arraysize(kNewData));
+  ASSERT_GE(updated_kernel_partition.size(), base::size(kNewData));
   EXPECT_TRUE(std::equal(std::begin(kNewData),
                          std::end(kNewData),
                          updated_kernel_partition.begin()));
diff --git a/payload_consumer/delta_performer_unittest.cc b/payload_consumer/delta_performer_unittest.cc
index 47cb0e7..3901195 100644
--- a/payload_consumer/delta_performer_unittest.cc
+++ b/payload_consumer/delta_performer_unittest.cc
@@ -27,6 +27,7 @@
 #include <base/files/file_path.h>
 #include <base/files/file_util.h>
 #include <base/files/scoped_temp_dir.h>
+#include <base/stl_util.h>
 #include <base/strings/string_number_conversions.h>
 #include <base/strings/string_util.h>
 #include <base/strings/stringprintf.h>
@@ -715,12 +716,12 @@
 
 TEST_F(DeltaPerformerTest, ExtentsToByteStringTest) {
   uint64_t test[] = {1, 1, 4, 2, 0, 1};
-  static_assert(arraysize(test) % 2 == 0, "Array size uneven");
+  static_assert(base::size(test) % 2 == 0, "Array size uneven");
   const uint64_t block_size = 4096;
   const uint64_t file_length = 4 * block_size - 13;
 
   google::protobuf::RepeatedPtrField<Extent> extents;
-  for (size_t i = 0; i < arraysize(test); i += 2) {
+  for (size_t i = 0; i < base::size(test); i += 2) {
     *(extents.Add()) = ExtentForRange(test[i], test[i + 1]);
   }
 
diff --git a/payload_consumer/postinstall_runner_action.cc b/payload_consumer/postinstall_runner_action.cc
index 9ecda48..a0b67ea 100644
--- a/payload_consumer/postinstall_runner_action.cc
+++ b/payload_consumer/postinstall_runner_action.cc
@@ -28,6 +28,7 @@
 #include <base/files/file_path.h>
 #include <base/files/file_util.h>
 #include <base/logging.h>
+#include <base/stl_util.h>
 #include <base/strings/string_split.h>
 #include <base/strings/string_util.h>
 
@@ -229,7 +230,7 @@
     bytes_read = 0;
     bool eof;
     bool ok =
-        utils::ReadAll(progress_fd_, buf, arraysize(buf), &bytes_read, &eof);
+        utils::ReadAll(progress_fd_, buf, base::size(buf), &bytes_read, &eof);
     progress_buffer_.append(buf, bytes_read);
     // Process every line.
     vector<string> lines = base::SplitString(
diff --git a/payload_generator/extent_ranges_unittest.cc b/payload_generator/extent_ranges_unittest.cc
index 2bcffed..326e936 100644
--- a/payload_generator/extent_ranges_unittest.cc
+++ b/payload_generator/extent_ranges_unittest.cc
@@ -18,6 +18,7 @@
 
 #include <vector>
 
+#include <base/stl_util.h>
 #include <gtest/gtest.h>
 
 #include "update_engine/common/test_utils.h"
@@ -53,7 +54,7 @@
 
 #define EXPECT_RANGE_EQ(ranges, var)                      \
   do {                                                    \
-    ExpectRangeEq(ranges, var, arraysize(var), __LINE__); \
+    ExpectRangeEq(ranges, var, base::size(var), __LINE__); \
   } while (0)
 
 void ExpectRangesOverlapOrTouch(uint64_t a_start,
diff --git a/payload_generator/payload_signer_unittest.cc b/payload_generator/payload_signer_unittest.cc
index 52d51bc..f7f9c69 100644
--- a/payload_generator/payload_signer_unittest.cc
+++ b/payload_generator/payload_signer_unittest.cc
@@ -20,6 +20,7 @@
 #include <vector>
 
 #include <base/logging.h>
+#include <base/stl_util.h>
 #include <gtest/gtest.h>
 
 #include "update_engine/common/hash_calculator.h"
@@ -124,8 +125,8 @@
   const Signatures_Signature& signature = signatures.signatures(0);
   EXPECT_EQ(1U, signature.version());
   const string& sig_data = signature.data();
-  ASSERT_EQ(arraysize(kDataSignature), sig_data.size());
-  for (size_t i = 0; i < arraysize(kDataSignature); i++) {
+  ASSERT_EQ(base::size(kDataSignature), sig_data.size());
+  for (size_t i = 0; i < base::size(kDataSignature); i++) {
     EXPECT_EQ(kDataSignature[i], static_cast<uint8_t>(sig_data[i]));
   }
 }
diff --git a/update_engine_client.cc b/update_engine_client.cc
index a721f7a..31448ea 100644
--- a/update_engine_client.cc
+++ b/update_engine_client.cc
@@ -29,6 +29,7 @@
 #include <base/strings/string_number_conversions.h>
 #include <base/strings/string_split.h>
 #include <base/threading/platform_thread.h>
+#include <base/threading/thread_task_runner_handle.h>
 #include <brillo/daemons/daemon.h>
 #include <brillo/flag_helper.h>
 #include <brillo/key_value_store.h>
@@ -86,7 +87,7 @@
 
     // We can't call QuitWithExitCode from OnInit(), so we delay the execution
     // of the ProcessFlags method after the Daemon initialization is done.
-    base::MessageLoop::current()->task_runner()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(&UpdateEngineClient::ProcessFlagsAndExit,
                    base::Unretained(this)));