chrome: Use stl utilities from the base namespace

chrome/browser/extensions/chrome_content_verifier_delegate.cc

Index: chrome/browser/extensions/chrome_content_verifier_delegate.cc
diff --git a/chrome/browser/extensions/chrome_content_verifier_delegate.cc b/chrome/browser/extensions/chrome_content_verifier_delegate.cc
index 2dd15aacb4518e0fe72598bc6906e35504f49cb9..3251de980e85b03d6b92a01a9095116f5777dac5 100644
--- a/chrome/browser/extensions/chrome_content_verifier_delegate.cc
+++ b/chrome/browser/extensions/chrome_content_verifier_delegate.cc
@@ -188,7 +188,7 @@ void ChromeContentVerifierDelegate::VerifyFailed(
     UMA_HISTOGRAM_BOOLEAN("Extensions.CorruptExtensionBecameDisabled", true);
     UMA_HISTOGRAM_ENUMERATION("Extensions.CorruptExtensionDisabledReason",
                               reason, ContentVerifyJob::FAILURE_REASON_MAX);
-  } else if (!ContainsKey(would_be_disabled_ids_, extension_id)) {
+  } else if (!base::ContainsKey(would_be_disabled_ids_, extension_id)) {
     UMA_HISTOGRAM_BOOLEAN("Extensions.CorruptExtensionWouldBeDisabled", true);
     would_be_disabled_ids_.insert(extension_id);
   }
@@ -196,7 +196,7 @@ void ChromeContentVerifierDelegate::VerifyFailed(
 
 void ChromeContentVerifierDelegate::LogFailureForPolicyForceInstall(
     const std::string& extension_id) {
-  if (!ContainsKey(corrupt_policy_extensions_, extension_id)) {
+  if (!base::ContainsKey(corrupt_policy_extensions_, extension_id)) {
     corrupt_policy_extensions_.insert(extension_id);
     UMA_HISTOGRAM_BOOLEAN("Extensions.CorruptPolicyExtensionWouldBeDisabled",
                           true);