Move StartsWith[ASCII] to base namespace.

chrome/common/extensions/chrome_extensions_client.cc

Index: chrome/common/extensions/chrome_extensions_client.cc
diff --git a/chrome/common/extensions/chrome_extensions_client.cc b/chrome/common/extensions/chrome_extensions_client.cc
index 7d8860882faaa8ffb4cb15cb542dc48877cce620..1b07deb50d3d4c10408898b1c94e4e61dd25685e 100644
--- a/chrome/common/extensions/chrome_extensions_client.cc
+++ b/chrome/common/extensions/chrome_extensions_client.cc
@@ -367,8 +367,10 @@ bool ChromeExtensionsClient::IsBlacklistUpdateURL(const GURL& url) const {
   // ExtensionUpdater ensures that we notice a change. This is the full URL
   // of a blacklist:
   // http://www.gstatic.com/chrome/extensions/blacklist/l_0_0_0_7.txt
-  return StartsWithASCII(url.spec(), kExtensionBlocklistUrlPrefix, true) ||
-         StartsWithASCII(url.spec(), kExtensionBlocklistHttpsUrlPrefix, true);
+  return base::StartsWithASCII(url.spec(), kExtensionBlocklistUrlPrefix,
+                               true) ||
+         base::StartsWithASCII(url.spec(), kExtensionBlocklistHttpsUrlPrefix,
+                               true);
 }
 
 std::set<base::FilePath> ChromeExtensionsClient::GetBrowserImagePaths(