Clang: enable -Wbool-conversions and -Wunused-variables on Linux.

chrome/browser/tab_contents/navigation_controller_unittest.cc

 // Copyright (c) 2010 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/file_util.h"
 #include "base/path_service.h"
 #include "base/scoped_ptr.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 1623 matching lines @@
   params.page_id = 0;
   params.url = result_url;
   params.transition = PageTransition::SERVER_REDIRECT;
   params.should_update_history = false;
   params.gesture = NavigationGestureAuto;
   params.is_post = false;
   NavigationController::LoadCommittedDetails details;
   controller().RendererDidNavigate(params, 0, &details);
 
   EXPECT_EQ(ASCIIToUTF16(kExpected), contents()->GetTitle());
-  EXPECT_EQ(true, contents()->ShouldDisplayURL());
+  EXPECT_TRUE(contents()->ShouldDisplayURL());
 }
 
 // Make sure that on cloning a tabcontents and going back needs_reload is false.
 TEST_F(NavigationControllerTest, CloneAndGoBack) {
   const GURL url1("http://foo1");
   const GURL url2("http://foo2");
 
   NavigateAndCommit(url1);
   NavigateAndCommit(url2);
 
@@ skipping 370 matching lines @@
                     PageTransition::LINK);
   session_helper_.AssertNavigationEquals(nav,
                                          windows_[0]->tabs[0]->navigations[0]);
   nav.set_url(url2);
   session_helper_.AssertNavigationEquals(nav,
                                          windows_[0]->tabs[0]->navigations[1]);
 }
 */
 
 }  // namespace