Fixes for -Wunused-function on Linux, Android and ChromeOS

chrome/app/chrome_main_delegate.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 "chrome/app/chrome_main_delegate.h"
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/files/file_path.h"
 #include "base/i18n/rtl.h"
@@ skipping 270 matching lines @@
 void HandleHelpSwitches(const CommandLine& command_line) {
   if (command_line.HasSwitch(switches::kHelp) ||
       command_line.HasSwitch(switches::kHelpShort)) {
     base::FilePath binary(command_line.argv()[0]);
     execlp("man", "man", binary.BaseName().value().c_str(), NULL);
     PLOG(FATAL) << "execlp failed";
   }
 }
 #endif
 
-#if !defined(OS_MACOSX)
+#if !defined(OS_MACOSX) && !defined(OS_ANDROID)
 void SIGTERMProfilingShutdown(int signal) {
   Profiling::Stop();
   struct sigaction sigact;
   memset(&sigact, 0, sizeof(sigact));
   sigact.sa_handler = SIG_DFL;
   CHECK(sigaction(SIGTERM, &sigact, NULL) == 0);
   raise(signal);
 }
 
 void SetUpProfilingShutdownHandler() {
@@ skipping 505 matching lines @@
 #endif
 }
 
 void ChromeMainDelegate::ZygoteForked() {
   Profiling::ProcessStarted();
   if (Profiling::BeingProfiled()) {
     base::debug::RestartProfilingAfterFork();
     SetUpProfilingShutdownHandler();
   }
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)

[Nico, 2013/11/10 05:07:09]

This ifdef can go away – OS_POSIX is always true here since it's in an elif
defined(OS_POSIX) in line 801, and OS_MACOSX is never set because it's in an
eles (line 801) to the #if MAC_OSX in line 783.

[hans, 2013/11/11 19:29:51]

Done.

   // Needs to be called after we have chrome::DIR_USER_DATA.  BrowserMain sets
   // this up for the browser process in a different manner.
   breakpad::InitCrashReporter();
 
   // Reset the command line for the newly spawned process.
   crash_keys::SetSwitchesFromCommandLine(CommandLine::ForCurrentProcess());
 #endif
 }
 
 #endif  // OS_MACOSX
@@ skipping 25 matching lines @@
 }
 
 content::ContentUtilityClient*
 ChromeMainDelegate::CreateContentUtilityClient() {
 #if defined(CHROME_MULTIPLE_DLL_BROWSER)
   return NULL;
 #else
   return &g_chrome_content_utility_client.Get();
 #endif
 }