Reland of place string::find(prefix) == 0 pattern with base::StartsWith().

chrome/test/chromedriver/net/adb_client_socket.cc

Index: chrome/test/chromedriver/net/adb_client_socket.cc
diff --git a/chrome/test/chromedriver/net/adb_client_socket.cc b/chrome/test/chromedriver/net/adb_client_socket.cc
index 0a398acf8d3cdc0928d17bb95e6c203529058ffc..9a5a672c6bc7e69fc06f35237c67cd837b01f100 100644
--- a/chrome/test/chromedriver/net/adb_client_socket.cc
+++ b/chrome/test/chromedriver/net/adb_client_socket.cc
@@ -271,7 +271,8 @@
     bool is_void = current_query_ < queries_.size() - 1;
     // The |shell| command is a special case because it is the only command that
     // doesn't include a length at the beginning of the data stream.
-    bool has_length = query.find("shell:") != 0;
+    bool has_length =
+        !base::StartsWith(query, "shell:", base::CompareCase::SENSITIVE);
     SendCommand(query, is_void, has_length,
         base::Bind(&AdbQuerySocket::OnResponse, base::Unretained(this)));
   }