Change PDF scaling factor from double to float.

chrome/service/service_utility_process_host.h

 // 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.
 
 #ifndef CHROME_SERVICE_SERVICE_UTILITY_PROCESS_HOST_H_
 #define CHROME_SERVICE_SERVICE_UTILITY_PROCESS_HOST_H_
 
 #include "build/build_config.h"
 
 #include "base/memory/ref_counted.h"
@@ skipping 31 matching lines @@
   // get results back.  All functions are called on the thread passed along
   // to ServiceUtilityProcessHost.
   class Client : public base::RefCountedThreadSafe<Client> {
    public:
     Client() {}
 
     // Called when the child process died before a reply was receieved.
     virtual void OnChildDied() {}
 
     virtual void OnRenderPDFPagesToMetafilePageDone(
-        double scale_factor,
+        float scale_factor,
         const printing::MetafilePlayer& emf) {}
 
     // Called when at all pages in the PDF has been rendered.
     virtual void OnRenderPDFPagesToMetafileDone(bool success) {}
 
     // Called when the printer capabilities and defaults have been
     // retrieved successfully or if retrieval failed.
     virtual void OnGetPrinterCapsAndDefaults(
         bool succedded,
         const std::string& printer_name,
         const printing::PrinterCapsAndDefaults& caps_and_defaults) {}
 
     // Called when the printer capabilities and defaults have been
     // retrieved successfully or if retrieval failed.
     virtual void OnGetPrinterSemanticCapsAndDefaults(
         bool succedded,
         const std::string& printer_name,
         const printing::PrinterSemanticCapsAndDefaults& caps_and_defaults) {}
 
    protected:
     virtual ~Client() {}
 
    private:
     friend class base::RefCountedThreadSafe<Client>;
     friend class ServiceUtilityProcessHost;
 
     // Invoked when a metafile file is ready.
     // Returns true if metafile successfully loaded from |file|.
-    bool MetafileAvailable(double scale_factor, base::File file);
+    bool MetafileAvailable(float scale_factor, base::File file);
 
     DISALLOW_COPY_AND_ASSIGN(Client);
   };
 
   ServiceUtilityProcessHost(Client* client,
                             base::MessageLoopProxy* client_message_loop_proxy);
   virtual ~ServiceUtilityProcessHost();
 
   // Starts a process to render the specified pages in the given PDF file into
   // a metafile. Currently only implemented for Windows. If the PDF has fewer
@@ skipping 32 matching lines @@
   // Launch the child process synchronously.
   bool Launch(base::CommandLine* cmd_line, bool no_sandbox);
 
   base::ProcessHandle handle() const { return handle_; }
 
   void OnMetafileSpooled(bool success);
   void OnPDFToEmfFinished(bool success);
 
   // Messages handlers:
   void OnRenderPDFPagesToMetafilesPageCount(int page_count);
-  void OnRenderPDFPagesToMetafilesPageDone(bool success, double scale_factor);
+  void OnRenderPDFPagesToMetafilesPageDone(bool success, float scale_factor);
   void OnGetPrinterCapsAndDefaultsSucceeded(
       const std::string& printer_name,
       const printing::PrinterCapsAndDefaults& caps_and_defaults);
   void OnGetPrinterCapsAndDefaultsFailed(const std::string& printer_name);
   void OnGetPrinterSemanticCapsAndDefaultsSucceeded(
       const std::string& printer_name,
       const printing::PrinterSemanticCapsAndDefaults& caps_and_defaults);
   void OnGetPrinterSemanticCapsAndDefaultsFailed(
       const std::string& printer_name);
 
   scoped_ptr<content::ChildProcessHost> child_process_host_;
   base::ProcessHandle handle_;
   // A pointer to our client interface, who will be informed of progress.
   scoped_refptr<Client> client_;
   scoped_refptr<base::MessageLoopProxy> client_message_loop_proxy_;
   bool waiting_for_reply_;
 
   // Start time of operation.
   base::Time start_time_;
 
   class PdfToEmfState;
   scoped_ptr<PdfToEmfState> pdf_to_emf_state_;
 
   base::WeakPtrFactory<ServiceUtilityProcessHost> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceUtilityProcessHost);
 };
 
 #endif  // CHROME_SERVICE_SERVICE_UTILITY_PROCESS_HOST_H_