mac: Prepare most test code for -Wunused-functions too.

chrome/browser/ui/search/instant_extended_interactive_uitest.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 <sstream>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram_base.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/metrics/statistics_recorder.h"
@@ skipping 70 matching lines @@
 #include "net/url_request/url_fetcher_impl.h"
 #include "net/url_request/url_request_status.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using testing::HasSubstr;
 
 namespace {
 
-// Creates a bitmap of the specified color. Caller takes ownership.
-gfx::Image CreateBitmap(SkColor color) {
-  SkBitmap thumbnail;
-  thumbnail.setConfig(SkBitmap::kARGB_8888_Config, 4, 4);
-  thumbnail.allocPixels();
-  thumbnail.eraseColor(color);
-  return gfx::Image::CreateFrom1xBitmap(thumbnail);  // adds ref.
-}
-
 // Task used to make sure history has finished processing a request. Intended
 // for use with BlockUntilHistoryProcessesPendingRequests.
 class QuittingHistoryDBTask : public history::HistoryDBTask {
  public:
   QuittingHistoryDBTask() {}
 
   virtual bool RunOnDBThread(history::HistoryBackend* backend,
                              history::HistoryDatabase* db) OVERRIDE {
     return true;
   }
@@ skipping 930 matching lines @@
   stream << "link.href = \"" << result_url.spec() << "\";";
   stream << "document.body.appendChild(link);";
   stream << "link.click();";
   EXPECT_TRUE(content::ExecuteScript(contents, stream.str()));
 
   content::WaitForLoadStop(contents);
   std::string expected_title =
       "Referrer is " + instant_url().GetWithEmptyPath().spec();
   EXPECT_EQ(ASCIIToUTF16(expected_title), contents->GetTitle());
 }