clang/win: Fix most -Wunused-function warnings in Chromium code.

printing/printed_document_win.cc

 // Copyright (c) 2011 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 "printing/printed_document.h"
 
 #include "base/logging.h"
 #include "printing/page_number.h"
 #include "printing/printed_pages_source.h"
 #include "printing/printed_page.h"
 #include "printing/units.h"
 #include "skia/ext/platform_device.h"
 
 namespace {
 
 void SimpleModifyWorldTransform(HDC context,
                                 int offset_x,
                                 int offset_y,
                                 float shrink_factor) {
   XFORM xform = { 0 };
   xform.eDx = static_cast<float>(offset_x);
   xform.eDy = static_cast<float>(offset_y);
   xform.eM11 = xform.eM22 = 1.f / shrink_factor;
   BOOL res = ModifyWorldTransform(context, &xform, MWT_LEFTMULTIPLY);
   DCHECK_NE(res, 0);
 }
 
-void DrawRect(HDC context, gfx::Rect rect) {
-  Rectangle(context, rect.x(), rect.y(), rect.right(), rect.bottom());
-}
-
 }  // namespace
 
 namespace printing {
 
 void PrintedDocument::RenderPrintedPage(
     const PrintedPage& page, gfx::NativeDrawingContext context) const {
 #ifndef NDEBUG
   {
     // Make sure the page is from our list.
     base::AutoLock lock(lock_);
@@ skipping 35 matching lines @@
 
     BOOL res = RestoreDC(context, saved_state);
     DCHECK_NE(res, 0);
   }
 
   int res = RestoreDC(context, saved_state);
   DCHECK_NE(res, 0);
 }
 
 }  // namespace printing