Make the Android GN debug component build actually build.

media/blink/key_system_config_selector_unittest.cc

 // Copyright 2015 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 <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 200 matching lines @@
     succeeded_count_++;
     config_ = result;
   }
 
   void OnNotSupported(const blink::WebString&) { not_supported_count_++; }
 
   scoped_ptr<FakeKeySystems> key_systems_;
   scoped_ptr<FakeMediaPermission> media_permission_;
 
   // Held values for the call to SelectConfig().
-  blink::WebString key_system_ = kSupported;
+  blink::WebString key_system_ = blink::WebString::fromUTF8(kSupported);
   std::vector<blink::WebMediaKeySystemConfiguration> configs_;
   blink::WebSecurityOrigin security_origin_ =
       blink::WebSecurityOrigin::createFromString(kDefaultSecurityOrigin);
 
   // Holds the last successful accumulated configuration.
   blink::WebMediaKeySystemConfiguration config_;
 
   int succeeded_count_;
   int not_supported_count_;
 
@@ skipping 522 matching lines @@
 
   blink::WebMediaKeySystemConfiguration config2;
   config2.label = "b";
   configs_.push_back(config2);
 
   ASSERT_TRUE(SelectConfigRequestsPermissionAndReturnsConfig());
   ASSERT_EQ("b", config_.label);
 }
 
 }  // namespace media