Move StringPiece into the base namespace. It is colliding

webkit/tools/test_shell/test_shell_mac.mm

 // Copyright (c) 2006-2008 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 <ApplicationServices/ApplicationServices.h>
 #import <Cocoa/Cocoa.h>
 #import <objc/objc-runtime.h>
 #include <sys/stat.h>
 
 #include "webkit/tools/test_shell/test_shell.h"
@@ skipping 591 matching lines @@
 void TestShell::ShowStartupDebuggingDialog() {
   NSAlert* alert = [[[NSAlert alloc] init] autorelease];
   alert.messageText = @"Attach to me?";
   alert.informativeText = @"This would probably be a good time to attach your "
       "debugger.";
   [alert addButtonWithTitle:@"OK"];
 
   [alert runModal];
 }
 
-StringPiece TestShell::NetResourceProvider(int key) {
+base::StringPiece TestShell::NetResourceProvider(int key) {
   // TODO(port): Return the requested resource.
-  return StringPiece();
+  return base::StringPiece();
 }
 
 //-----------------------------------------------------------------------------
 
 namespace webkit_glue {
 
 string16 GetLocalizedString(int message_id) {
-  StringPiece res;
+  base::StringPiece res;
   if (!g_resource_data_pack->Get(message_id, &res)) {
     LOG(FATAL) << "failed to load webkit string with id " << message_id;
   }
 
   return string16(reinterpret_cast<const char16*>(res.data()),
                   res.length() / 2);
 }
 
-StringPiece GetDataResource(int resource_id) {
+base::StringPiece GetDataResource(int resource_id) {
   switch (resource_id) {
   case IDR_BROKENIMAGE: {
     // Use webkit's broken image icon (16x16)
     static std::string broken_image_data;
     if (broken_image_data.empty()) {
       FilePath path = GetResourcesFilePath();
       // In order to match WebKit's colors for the missing image, we have to
       // use a PNG. The GIF doesn't have the color range needed to correctly
       // match the TIFF they use in Safari.
       path = path.AppendASCII("missingImage.png");
@@ skipping 29 matching lines @@
   case IDR_SEARCH_CANCEL:
   case IDR_SEARCH_CANCEL_PRESSED:
   case IDR_SEARCH_MAGNIFIER:
   case IDR_SEARCH_MAGNIFIER_RESULTS:
     return TestShell::NetResourceProvider(resource_id);
 
   default:
     break;
   }
 
-  return StringPiece();
+  return base::StringPiece();
 }
 
 void GetPlugins(bool refresh, std::vector<WebPluginInfo>* plugins) {
   NPAPI::PluginList::Singleton()->GetPlugins(refresh, plugins);
 }
 
 bool DownloadUrl(const std::string& url, NSWindow* caller_window) {
   return false;
 }
 
 void DidLoadPlugin(const std::string& filename) {
 }
 
 void DidUnloadPlugin(const std::string& filename) {
 }
 
 }  // namespace webkit_glue