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

chrome/test/chromedriver/net/adb_client_socket.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/test/chromedriver/net/adb_client_socket.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 253 matching lines @@
     if (!CheckNetResultOrDie(result))
       return;
     std::string query = queries_[current_query_];
     if (query.length() > 0xFFFF) {
       CheckNetResultOrDie(net::ERR_MSG_TOO_BIG);
       return;
     }
     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)));
   }
 
   void OnResponse(int result, const std::string& response) {
     if (++current_query_ < queries_.size()) {
       SendNextQuery(net::OK);
     } else {
       callback_.Run(result, response);
       delete this;
@@ skipping 240 matching lines @@
                                     base::Unretained(this),
                                     callback,
                                     new_response,
                                     response_buffer,
                                     bytes_left));
   if (result > 0)
     OnResponseData(callback, new_response, response_buffer, bytes_left, result);
   else if (result != net::ERR_IO_PENDING)
     callback.Run(net::OK, new_response);
 }