Move StringPiece into the base namespace. It is colliding

chrome/renderer/user_script_slave.cc

 // Copyright (c) 2009 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/user_script_slave.h"
 
 #include "app/resource_bundle.h"
 #include "base/histogram.h"
 #include "base/logging.h"
 #include "base/perftimer.h"
@@ skipping 24 matching lines @@
     "chrome.self.onConnect = chrome.extension.onConnect;";
 
 UserScriptSlave::UserScriptSlave()
     : shared_memory_(NULL),
       script_deleter_(&scripts_),
       user_script_start_line_(0) {
   api_js_ = ResourceBundle::GetSharedInstance().GetRawDataResource(
                 IDR_GREASEMONKEY_API_JS);
 
   // Count the number of lines that will be injected before the user script.
-  StringPiece::size_type pos = 0;
-  while ((pos = api_js_.find('\n', pos)) != StringPiece::npos) {
+  base::StringPiece::size_type pos = 0;
+  while ((pos = api_js_.find('\n', pos)) != base::StringPiece::npos) {
     user_script_start_line_++;
     pos++;
   }
 
   // NOTE: There is actually one extra line in the injected script because the
   // function header includes a newline as well. But WebKit expects the
   // numbering to be one-based, not zero-based, so actually *not* accounting for
   // this extra line ends us up with the right offset.
 }
 
@@ skipping 31 matching lines @@
     script->Unpickle(pickle, &iter);
 
     // Note that this is a pointer into shared memory. We don't own it. It gets
     // cleared up when the last renderer or browser process drops their
     // reference to the shared memory.
     for (size_t j = 0; j < script->js_scripts().size(); ++j) {
       const char* body = NULL;
       int body_length = 0;
       CHECK(pickle.ReadData(&iter, &body, &body_length));
       script->js_scripts()[j].set_external_content(
-          StringPiece(body, body_length));
+          base::StringPiece(body, body_length));
     }
     for (size_t j = 0; j < script->css_scripts().size(); ++j) {
       const char* body = NULL;
       int body_length = 0;
       CHECK(pickle.ReadData(&iter, &body, &body_length));
       script->css_scripts()[j].set_external_content(
-          StringPiece(body, body_length));
+          base::StringPiece(body, body_length));
     }
   }
 
   return true;
 }
 
 bool UserScriptSlave::InjectScripts(WebFrame* frame,
                                     UserScript::RunLocation location) {
   // Don't bother if this is not a URL we inject script into.
   if (!URLPattern::IsValidScheme(GURL(frame->url()).scheme()))
@@ skipping 57 matching lines @@
     HISTOGRAM_TIMES("UserScripts:DocStart:Time", timer.Elapsed());
   } else {
     HISTOGRAM_COUNTS_100("UserScripts:DocEnd:Count", num_matched);
     HISTOGRAM_TIMES("UserScripts:DocEnd:Time", timer.Elapsed());
   }
 
   LOG(INFO) << "Injected " << num_matched << " user scripts into " <<
       frame->url().spec().data();
   return true;
 }