Moved AlphaBlend rasterization to renderer process like it was before 152681.

chrome/renderer/print_web_view_helper_win.cc

Index: chrome/renderer/print_web_view_helper_win.cc
diff --git a/chrome/renderer/print_web_view_helper_win.cc b/chrome/renderer/print_web_view_helper_win.cc
index 075ed6bca5fe7554adeb4fefaec58580579d22ed..bdc702bde889ef2bf357306dbee68200ab484a76 100644
--- a/chrome/renderer/print_web_view_helper_win.cc
+++ b/chrome/renderer/print_web_view_helper_win.cc
@@ -38,7 +38,7 @@ void PrintWebViewHelper::PrintPageInternal(
     WebFrame* frame) {
   // Generate a memory-based metafile. It will use the current screen's DPI.
   // Each metafile contains a single page.
-  scoped_ptr<Metafile> metafile(new printing::NativeMetafile);
+  scoped_ptr<printing::NativeMetafile> metafile(new printing::NativeMetafile);
   metafile->Init();
   DCHECK(metafile->context());
   skia::InitializeDC(metafile->context());
@@ -62,6 +62,13 @@ void PrintWebViewHelper::PrintPageInternal(
   if (!metafile->FinishDocument())
     NOTREACHED();
 
+  if (!params.params.supports_alpha_blend && metafile->IsAlphaBlendUsed()) {
+    scoped_ptr<printing::NativeMetafile> raster_metafile(
+        metafile->RasterizeAlphaBlend());
+    if (raster_metafile.get())
+      metafile.swap(raster_metafile);
+  }
+
   // Get the size of the compiled metafile.
   uint32 buf_size = metafile->GetDataSize();
   DCHECK_GT(buf_size, 128u);