Use base::StartWith() in more places when appropriate.

device/bluetooth/bluetooth_uuid.cc

Index: device/bluetooth/bluetooth_uuid.cc
diff --git a/device/bluetooth/bluetooth_uuid.cc b/device/bluetooth/bluetooth_uuid.cc
index 071493a902b55ac8b0570b190e2ecf1885b1fa0d..b35094deba169ab202a92d118bb5d02027b38c18 100644
--- a/device/bluetooth/bluetooth_uuid.cc
+++ b/device/bluetooth/bluetooth_uuid.cc
@@ -13,8 +13,8 @@ namespace device {
 
 namespace {
 
-const char* kCommonUuidPostfix = "-0000-1000-8000-00805f9b34fb";
-const char* kCommonUuidPrefix = "0000";
+const char kCommonUuidPostfix[] = "-0000-1000-8000-00805f9b34fb";
+const char kCommonUuidPrefix[] = "0000";
 
 // Returns the canonical, 128-bit canonical, and the format of the UUID
 // in |canonical|, |canonical_128|, and |format| based on |uuid|.
@@ -30,8 +30,10 @@ void GetCanonicalUuid(std::string uuid,
   if (uuid.empty())
     return;
 
-  if (uuid.size() < 11 && uuid.find("0x") == 0)
+  if (uuid.size() < 11 &&
+      base::StartsWith(uuid, "0x", base::CompareCase::SENSITIVE)) {
     uuid = uuid.substr(2);
+  }
 
   if (!(uuid.size() == 4 || uuid.size() == 8 || uuid.size() == 36))
     return;