Make UTF16ToASCII and UTF16TOUTF8 take a StringPiece

content/renderer/renderer_blink_platform_impl.cc

 // Copyright (c) 2012 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/renderer/renderer_blink_platform_impl.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/location.h"
@@ skipping 408 matching lines @@
     return IsNotSupported;
 
   if (!key_system.isEmpty()) {
     // Check whether the key system is supported with the mime_type and codecs.
 
     // Chromium only supports ASCII parameters.
     if (!base::IsStringASCII(key_system))
       return IsNotSupported;
 
     std::string key_system_ascii =
-        media::GetUnprefixedKeySystemName(base::UTF16ToASCII(key_system));
+        media::GetUnprefixedKeySystemName(base::UTF16ToASCII(
+            base::StringPiece16(key_system)));
     std::vector<std::string> strict_codecs;
     media::ParseCodecString(ToASCIIOrEmpty(codecs), &strict_codecs, true);
 
     if (!media::PrefixedIsSupportedKeySystemWithMediaMimeType(
             mime_type_ascii, strict_codecs, key_system_ascii)) {
       return IsNotSupported;
     }
 
     // Continue processing the mime_type and codecs.
   }
@@ skipping 274 matching lines @@
       break;
     case 8:
       layout = media::CHANNEL_LAYOUT_7_1;
       break;
     default:
       layout = media::CHANNEL_LAYOUT_STEREO;
   }
 
   int session_id = 0;
   if (input_device_id.isNull() ||
-      !base::StringToInt(base::UTF16ToUTF8(input_device_id), &session_id)) {
+      !base::StringToInt(base::UTF16ToUTF8(
+          base::StringPiece16(input_device_id)), &session_id)) {
     if (input_channels > 0)
       DLOG(WARNING) << "createAudioDevice(): request for audio input ignored";
 
     input_channels = 0;
   }
 
   media::AudioParameters params(
       media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
       layout, static_cast<int>(sample_rate), 16, buffer_size,
       media::AudioParameters::NO_EFFECTS);
@@ skipping 502 matching lines @@
 //------------------------------------------------------------------------------
 
 void RendererBlinkPlatformImpl::MockBatteryStatusChangedForTesting(
     const blink::WebBatteryStatus& status) {
   if (!g_test_battery_status_listener)
     return;
   g_test_battery_status_listener->updateBatteryStatus(status);
 }
 
 }  // namespace content