Revert 239759 "The comment in base64.h implies that base::Base64..."

trunk/src/content/shell/browser/webkit_test_controller.cc

 // Copyright 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 "content/shell/browser/webkit_test_controller.h"
 
 #include <iostream>
 
 #include "base/base64.h"
 #include "base/command_line.h"
@@ skipping 152 matching lines @@
   *output_ << message << "\n";
   PrintTextFooter();
   PrintImageFooter();
 }
 
 void WebKitTestResultPrinter::PrintEncodedBinaryData(
     const std::vector<unsigned char>& data) {
   *output_ << "Content-Transfer-Encoding: base64\n";
 
   std::string data_base64;
-  base::Base64Encode(
+  const bool success = base::Base64Encode(
       base::StringPiece(reinterpret_cast<const char*>(&data[0]), data.size()),
       &data_base64);
+  DCHECK(success);
 
   *output_ << "Content-Length: " << data_base64.length() << "\n";
   output_->write(data_base64.c_str(), data_base64.length());
 }
 
 void WebKitTestResultPrinter::CloseStderr() {
   if (state_ != AFTER_TEST)
     return;
   if (!capture_text_only_) {
     *error_ << "#EOF\n";
@@ skipping 460 matching lines @@
   }
   base::MessageLoop::current()->RunUntilIdle();
 }
 
 void WebKitTestController::OnResetDone() {
   base::MessageLoop::current()->PostTask(FROM_HERE,
                                          base::MessageLoop::QuitClosure());
 }
 
 }  // namespace content