Move RemoveChars, ReplaceChars, TrimString, and TruncateUTF8ToByteSize to base namespace.

chrome/browser/guestview/webview/webview_guest.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 "chrome/browser/guestview/webview/webview_guest.h"
 
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/api/web_request/web_request_api.h"
 #include "chrome/browser/extensions/extension_renderer_state.h"
@@ skipping 565 matching lines @@
 void WebViewGuest::DidFailProvisionalLoad(
     int64 frame_id,
     const string16& frame_unique_name,
     bool is_main_frame,
     const GURL& validated_url,
     int error_code,
     const string16& error_description,
     content::RenderViewHost* render_view_host) {
   // Translate the |error_code| into an error string.
   std::string error_type;
-  RemoveChars(net::ErrorToString(error_code), "net::", &error_type);
+  base::RemoveChars(net::ErrorToString(error_code), "net::", &error_type);
   LoadAbort(is_main_frame, validated_url, error_type);
 }
 
 void WebViewGuest::DidStartProvisionalLoadForFrame(
     int64 frame_id,
     int64 parent_frame_id,
     bool is_main_frame,
     const GURL& validated_url,
     bool is_error_page,
     bool is_iframe_srcdoc,
@@ skipping 105 matching lines @@
     const PermissionResponseCallback& callback,
     BrowserPluginPermissionType permission_type,
     bool allowed_by_default)
     : callback(callback),
       permission_type(permission_type),
       allowed_by_default(allowed_by_default) {
 }
 
 WebViewGuest::PermissionResponseInfo::~PermissionResponseInfo() {
 }