Replace string::find(prefix) == 0 pattern with base::StartsWith().

net/base/filename_util.cc

Index: net/base/filename_util.cc
diff --git a/net/base/filename_util.cc b/net/base/filename_util.cc
index 153ce43d024882f3d48d62fb1c338930a7d50ee1..1e1d51c0e247709b479a2c44095c7ac117bd4176 100644
--- a/net/base/filename_util.cc
+++ b/net/base/filename_util.cc
@@ -174,8 +174,10 @@ bool IsReservedNameOnWindows(const base::FilePath::StringType& filename) {
     if (filename_lower == known_devices[i])
       return true;
     // Starts with "DEVICE.".
-    if (filename_lower.find(std::string(known_devices[i]) + ".") == 0)
+    if (base::StartsWith(filename_lower, std::string(known_devices[i]) + ".",
+                         base::CompareCase::SENSITIVE)) {
       return true;
+    }
   }
 
   static const char* const magic_names[] = {