Proxy the PPP_Printing interface

webkit/plugins/ppapi/ppapi_plugin_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 "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
@@ skipping 1495 matching lines @@
 }
 
 bool PluginInstance::PrintRasterOutput(PP_Resource print_output,
                                        WebKit::WebCanvas* canvas) {
   EnterResourceNoLock<PPB_ImageData_API> enter(print_output, true);
   if (enter.failed())
     return false;
   PPB_ImageData_Impl* image =
       static_cast<PPB_ImageData_Impl*>(enter.object());
 
-  // TODO(brettw) this should not require the image to be mapped. It should
-  // instead map on demand. The DCHECK here is to remind you if you see the
-  // assert fire, fix the bug rather than mapping the data.
-  DCHECK(image->is_mapped());
-  if (!image->is_mapped())
+  if (!image->Map())
     return false;
 
   const SkBitmap* bitmap = image->GetMappedBitmap();
   if (!bitmap)
     return false;
 
   // Draw the printed image into the supplied canvas.
   SkIRect src_rect;
   src_rect.set(0, 0, bitmap->width(), bitmap->height());
   SkRect dest_rect;
@@ skipping 588 matching lines @@
   screen_size_for_fullscreen_ = gfx::Size();
   WebElement element = container_->element();
   element.setAttribute(WebString::fromUTF8(kWidth), width_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kHeight), height_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kBorder), border_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kStyle), style_before_fullscreen_);
 }
 
 }  // namespace ppapi
 }  // namespace webkit