Make the PDF viewer background color a property of the instance.

pdf/instance.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 "pdf/instance.h"
 
 #include <algorithm>  // for min()
 #define _USE_MATH_DEFINES  // for M_PI
 #include <cmath>      // for log() and pow()
 #include <math.h>
@@ skipping 349 matching lines @@
       url = argv[i];
       break;
     }
   }
 
   if (!url)
     return false;
 
   CreatePageIndicator(IsPrintPreviewUrl(url));
 
-  engine_->SetBackgroundColor(kBackgroundColor);
-
   if (!full_) {
     // For PDFs embedded in a frame, we don't get the data automatically like we
     // do for full-frame loads.  Start loading the data manually.
     LoadUrl(url);
   } else {
     DCHECK(!did_call_start_loading_);
     pp::PDF::DidStartLoading(this);
     did_call_start_loading_ = true;
   }
 
@@ skipping 2254 matching lines @@
   ScrollToPage(0);
   engine_->AppendBlankPages(print_preview_page_count_);
   if (preview_pages_info_.size() > 0)
     LoadAvailablePreviewPage();
 }
 
 bool Instance::IsPrintPreview() {
   return IsPrintPreviewUrl(url_);
 }
 
+uint32 Instance::GetBackgroundColor() {
+  return kBackgroundColor;
+}
+
 int Instance::GetPageNumberToDisplay() {
   int page = engine_->GetMostVisiblePage();
   if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
     page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
     return print_preview_page_numbers_[page];
   }
   return page + 1;
 }
 
 void Instance::ProcessPreviewPageInfo(const std::string& url,
@@ skipping 160 matching lines @@
   return instance_->HasScriptableMethod(name, exception);
 }
 
 pp::Var PDFScriptableObject::Call(const pp::Var& method,
                                   const std::vector<pp::Var>& args,
                                   pp::Var* exception) {
   return instance_->CallScriptableMethod(method, args, exception);
 }
 
 }  // namespace chrome_pdf