Use explicit WebString conversions in remaining content files

content/renderer/browser_plugin/browser_plugin.cc

 // Copyright 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/browser_plugin/browser_plugin.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 124 matching lines @@
   BrowserPluginManager::Get()->Send(new BrowserPluginHostMsg_SatisfySequence(
       render_frame_routing_id_, browser_plugin_instance_id_, sequence));
 }
 
 void BrowserPlugin::UpdateDOMAttribute(const std::string& attribute_name,
                                        const base::string16& attribute_value) {
   if (!container())
     return;
 
   blink::WebElement element = container()->element();
-  blink::WebString web_attribute_name =
-      blink::WebString::fromUTF8(attribute_name);
-  element.setAttribute(web_attribute_name, attribute_value);
+  element.setAttribute(blink::WebString::fromUTF8(attribute_name),
+                       blink::WebString::fromUTF16(attribute_value));
 }
 
 void BrowserPlugin::Attach() {
   Detach();
 
   BrowserPluginHostMsg_Attach_Params attach_params;
   attach_params.focused = ShouldGuestBeFocused();
   attach_params.visible = visible_;
   attach_params.view_rect = view_rect();
   attach_params.is_full_page_plugin = false;
@@ skipping 460 matching lines @@
 
 bool BrowserPlugin::HandleMouseLockedInputEvent(
     const blink::WebMouseEvent& event) {
   BrowserPluginManager::Get()->Send(
       new BrowserPluginHostMsg_HandleInputEvent(browser_plugin_instance_id_,
                                                 &event));
   return true;
 }
 
 }  // namespace content