Delete some unused code found by -Wunused-function

content/gpu/gpu_main.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 <stdlib.h>
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
@@ skipping 30 matching lines @@
 #if defined(USE_X11)
 #include "ui/base/x/x11_util.h"
 #endif
 
 #if defined(OS_LINUX)
 #include "content/public/common/sandbox_init.h"
 #endif
 
 namespace {
 void WarmUpSandbox(const content::GPUInfo&, bool);
+#if defined(OS_LINUX)
 void CollectGraphicsInfo(content::GPUInfo*);
+#endif
 }
 
 // Main function for starting the Gpu process.
 int GpuMain(const content::MainFunctionParams& parameters) {
   TRACE_EVENT0("gpu", "GpuMain");
 
   base::Time start_time = base::Time::Now();
 
   const CommandLine& command_line = parameters.command_line;
   if (command_line.HasSwitch(switches::kGpuStartupDialog)) {
@@ skipping 157 matching lines @@
     main_message_loop.Run();
   }
 
   child_thread->StopWatchdog();
 
   return 0;
 }
 
 namespace {
 
+#if defined(OS_LINUX)
 void CreateDummyGlContext() {
   scoped_refptr<gfx::GLSurface> surface(
       gfx::GLSurface::CreateOffscreenGLSurface(false, gfx::Size(1, 1)));
   if (!surface.get()) {
     VLOG(1) << "gfx::GLSurface::CreateOffscreenGLSurface failed";
     return;
   }
 
   // On Linux, this is needed to make sure /dev/nvidiactl has
   // been opened and its descriptor cached.
   scoped_refptr<gfx::GLContext> context(
       gfx::GLContext::CreateGLContext(NULL,
                                       surface,
                                       gfx::PreferDiscreteGpu));
   if (!context.get()) {
     VLOG(1) << "gfx::GLContext::CreateGLContext failed";
     return;
   }
 
   // Similarly, this is needed for /dev/nvidia0.
   if (context->MakeCurrent(surface)) {
     context->ReleaseCurrent(surface.get());
   } else {
     VLOG(1)  << "gfx::GLContext::MakeCurrent failed";
   }
 }
+#endif
 
 void WarmUpSandbox(const content::GPUInfo& gpu_info,
                    bool should_initialize_gl_context) {
   {
     TRACE_EVENT0("gpu", "Warm up rand");
     // Warm up the random subsystem, which needs to be done pre-sandbox on all
     // platforms.
     (void) base::RandUint64();
   }
   {
@@ skipping 36 matching lines @@
   }
 
   {
     TRACE_EVENT0("gpu", "Initialize DXVA");
     // Initialize H/W video decoding stuff which fails in the sandbox.
     DXVAVideoDecodeAccelerator::PreSandboxInitialization();
   }
 #endif
 }
 
+#if defined(OS_LINUX)
 void CollectGraphicsInfo(content::GPUInfo* gpu_info) {
   if (!gpu_info_collector::CollectGraphicsInfo(gpu_info))
     VLOG(1) << "gpu_info_collector::CollectGraphicsInfo failed";
   content::GetContentClient()->SetGpuInfo(*gpu_info);
 }
+#endif
 
 }  // namespace.