Switch the background color in PDF Viewer when using Material Design

pdf/pdfium/pdfium_engine.cc

Index: pdf/pdfium/pdfium_engine.cc
diff --git a/pdf/pdfium/pdfium_engine.cc b/pdf/pdfium/pdfium_engine.cc
index 4c5ba21d31a7163f683948f76bd1e950f7c4e0e6..15e4a4850092082c4e81d75e0f81ab9204db4b72 100644
--- a/pdf/pdfium/pdfium_engine.cc
+++ b/pdf/pdfium/pdfium_engine.cc
@@ -2366,6 +2366,14 @@ int PDFiumEngine::GetNumberOfPages() {
   return pages_.size();
 }
 
+uint32 PDFiumEngine::GetBackgroundColor() {
+  return background_color_;
+}
+
+void PDFiumEngine::SetBackgroundColor(uint32 background_color) {
+  background_color_ = background_color;
+}
+
 pp::VarArray PDFiumEngine::GetBookmarks() {
   pp::VarDictionary dict = TraverseBookmarks(doc_, NULL);
   // The root bookmark contains no useful information.
@@ -2937,7 +2945,7 @@ void PDFiumEngine::FillPageSides(int progressive_index) {
 
     FPDFBitmap_FillRect(bitmap, left.x() - dirty_in_screen.x(),
                         left.y() - dirty_in_screen.y(), left.width(),
-                        left.height(), kBackgroundColor);
+                        left.height(), background_color_);
   }
 
   if (page_rect.right() < document_size_.width()) {
@@ -2951,7 +2959,7 @@ void PDFiumEngine::FillPageSides(int progressive_index) {
 
     FPDFBitmap_FillRect(bitmap, right.x() - dirty_in_screen.x(),
                         right.y() - dirty_in_screen.y(), right.width(),
-                        right.height(), kBackgroundColor);
+                        right.height(), background_color_);
   }
 
   // Paint separator.
@@ -2963,7 +2971,7 @@ void PDFiumEngine::FillPageSides(int progressive_index) {
 
   FPDFBitmap_FillRect(bitmap, bottom.x() - dirty_in_screen.x(),
                       bottom.y() - dirty_in_screen.y(), bottom.width(),
-                      bottom.height(), kBackgroundColor);
+                      bottom.height(), background_color_);
 }
 
 void PDFiumEngine::PaintPageShadow(int progressive_index,
@@ -3415,7 +3423,7 @@ void PDFiumEngine::DrawPageShadow(const pp::Rect& page_rc,
 
   // We need to check depth only to verify our copy of shadow matrix is correct.
   if (!page_shadow_.get() || page_shadow_->depth() != depth)
-    page_shadow_.reset(new ShadowMatrix(depth, factor, kBackgroundColor));
+    page_shadow_.reset(new ShadowMatrix(depth, factor, background_color_));
 
   DCHECK(!image_data->is_null());
   DrawShadow(image_data, shadow_rect, page_rect, clip_rect, *page_shadow_);