Update uses of UTF conversions in content/ to use the base:: namespace.

content/browser/renderer_host/render_view_host_unittest.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 "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/common/input_messages.h"
 #include "content/common/view_messages.h"
@@ skipping 182 matching lines @@
   // We use "//foo/bar" path (rather than "/foo/bar") since dragged paths are
   // expected to be absolute on any platforms.
   base::FilePath highlighted_file_path(FILE_PATH_LITERAL("//tmp/foo.html"));
   base::FilePath dragged_file_path(FILE_PATH_LITERAL("//tmp/image.jpg"));
   base::FilePath sensitive_file_path(FILE_PATH_LITERAL("//etc/passwd"));
   GURL highlighted_file_url = net::FilePathToFileURL(highlighted_file_path);
   GURL dragged_file_url = net::FilePathToFileURL(dragged_file_path);
   GURL sensitive_file_url = net::FilePathToFileURL(sensitive_file_path);
   dropped_data.url = highlighted_file_url;
   dropped_data.filenames.push_back(DropData::FileInfo(
-      UTF8ToUTF16(dragged_file_path.AsUTF8Unsafe()), base::string16()));
+      base::UTF8ToUTF16(dragged_file_path.AsUTF8Unsafe()), base::string16()));
 
   rvh()->DragTargetDragEnter(dropped_data, client_point, screen_point,
                               blink::WebDragOperationNone, 0);
 
   int id = process()->GetID();
   ChildProcessSecurityPolicyImpl* policy =
       ChildProcessSecurityPolicyImpl::GetInstance();
 
   EXPECT_FALSE(policy->CanRequestURL(id, highlighted_file_url));
   EXPECT_FALSE(policy->CanReadFile(id, highlighted_file_path));
@@ skipping 75 matching lines @@
 }
 
 TEST_F(RenderViewHostTest, RoutingIdSane) {
   RenderFrameHostImpl* root_rfh =
       contents()->GetFrameTree()->root()->current_frame_host();
   EXPECT_EQ(test_rvh()->GetProcess(), root_rfh->GetProcess());
   EXPECT_NE(test_rvh()->GetRoutingID(), root_rfh->routing_id());
 }
 
 }  // namespace content