Added Header and Footer support using Skia

skia/ext/vector_platform_device_skia.cc

 // Copyright (c) 2011 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 "skia/ext/vector_platform_device_skia.h"
 
 #include "skia/ext/bitmap_platform_device.h"
 #include "third_party/skia/include/core/SkClipStack.h"
 #include "third_party/skia/include/core/SkDraw.h"
 #include "third_party/skia/include/core/SkRect.h"
@@ skipping 173 matching lines @@
   if ((device->getDeviceCapabilities() & kVector_Capability)) {
     // Assume that a vectorial device means a VectorPlatformDeviceSkia, we need
     // to unwrap the embedded SkPDFDevice.
     VectorPlatformDeviceSkia* vector_device =
         static_cast<VectorPlatformDeviceSkia*>(device);
     real_device = vector_device->pdf_device_.get();
   }
   pdf_device_->drawDevice(draw, real_device, x, y, paint);
 }
 
+void VectorPlatformDeviceSkia::setDrawingArea(SkPDFDevice::DrawingArea area) {
+  pdf_device_->setDrawingArea(area);
+}
+
 #if defined(OS_WIN)
 void VectorPlatformDeviceSkia::DrawToNativeContext(HDC dc,
                                                    int x,
                                                    int y,
                                                    const RECT* src_rect) {
   SkASSERT(false);
 }
 #elif defined(OS_MACOSX)
 void VectorPlatformDeviceSkia::DrawToNativeContext(CGContext* context, int x,
     int y, const CGRect* src_rect) {
@@ skipping 10 matching lines @@
 SkDevice* VectorPlatformDeviceSkia::onCreateCompatibleDevice(
     SkBitmap::Config config, int width, int height, bool isOpaque, 
     Usage /*usage*/) {
   SkAutoTUnref<SkDevice> dev(pdf_device_->createCompatibleDevice(config, width,
                                                                  height,
                                                                  isOpaque));
   return new VectorPlatformDeviceSkia(static_cast<SkPDFDevice*>(dev.get()));
 }
 
 }  // namespace skia