Change PDF scaling factor from double to float.

chrome/service/cloud_print/print_system_win.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/service/cloud_print/print_system.h"
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 303 matching lines @@
         if (ret)
           delegate_ = delegate;
         return ret;
       } else {
         NOTREACHED();
         return false;
       }
       return true;
     }
 
-    void PreparePageDCForPrinting(HDC, double scale_factor) {
+    void PreparePageDCForPrinting(HDC, float scale_factor) {
       SetGraphicsMode(printer_dc_.Get(), GM_ADVANCED);
       // Setup the matrix to translate and scale to the right place. Take in
       // account the scale factor.
       // Note that the printing output is relative to printable area of
       // the page. That is 0,0 is offset by PHYSICALOFFSETX/Y from the page.
       int offset_x = ::GetDeviceCaps(printer_dc_.Get(), PHYSICALOFFSETX);
       int offset_y = ::GetDeviceCaps(printer_dc_.Get(), PHYSICALOFFSETY);
       XFORM xform = {0};
       xform.eDx = static_cast<float>(-offset_x);
       xform.eDy = static_cast<float>(-offset_y);
-      xform.eM11 = xform.eM22 = 1.0 / scale_factor;
+      xform.eM11 = xform.eM22 = 1.0f / scale_factor;
       SetWorldTransform(printer_dc_.Get(), &xform);
     }
 
     // ServiceUtilityProcessHost::Client implementation.
     virtual void OnRenderPDFPagesToMetafilePageDone(
-        double scale_factor,
+        float scale_factor,
         const printing::MetafilePlayer& emf) override {
       PreparePageDCForPrinting(printer_dc_.Get(), scale_factor);
       ::StartPage(printer_dc_.Get());
       emf.SafePlayback(printer_dc_.Get());
       ::EndPage(printer_dc_.Get());
     }
 
     // ServiceUtilityProcessHost::Client implementation.
     virtual void OnRenderPDFPagesToMetafileDone(bool success) override {
       PrintJobDone(success);
@@ skipping 478 matching lines @@
 }
 
 }  // namespace
 
 scoped_refptr<PrintSystem> PrintSystem::CreateInstance(
     const base::DictionaryValue* print_system_settings) {
   return new PrintSystemWin;
 }
 
 }  // namespace cloud_print