Continue to clean c_str() calls.

chrome/renderer/chrome_content_renderer_client.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 "chrome/renderer/chrome_content_renderer_client.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 672 matching lines @@
                      info.mime_types[i].additional_param_values,
                      &params.attributeNames, &params.attributeValues);
         break;
       }
     }
     if (params.mimeType.isNull() && (actual_mime_type.size() > 0)) {
       // Webkit might say that mime type is null while we already know the
       // actual mime type via ChromeViewHostMsg_GetPluginInfo. In that case
       // we should use what we know since WebpluginDelegateProxy does some
       // specific initializations based on this information.
-      params.mimeType = WebString::fromUTF8(actual_mime_type.c_str());
+      params.mimeType = WebString::fromUTF8(actual_mime_type);
     }
 
     ContentSettingsObserver* observer =
         ContentSettingsObserver::Get(render_frame);
 
     const ContentSettingsType content_type =
         ShouldUseJavaScriptSettingForPlugin(info)
             ? CONTENT_SETTINGS_TYPE_JAVASCRIPT
             : CONTENT_SETTINGS_TYPE_PLUGINS;
 
@@ skipping 819 matching lines @@
     std::vector<base::SchedulerWorkerPoolParams>* params_vector,
     base::TaskScheduler::WorkerPoolIndexForTraitsCallback*
         index_to_traits_callback) {
   DCHECK(params_vector);
   DCHECK(index_to_traits_callback);
   // If this call fails, content will fall back to the default params.
   *params_vector = task_scheduler_util::GetRendererWorkerPoolParams();
   *index_to_traits_callback =
       base::Bind(&task_scheduler_util::RendererWorkerPoolIndexForTraits);
 }