Make filters use SkImage instead of SkBitmap

src/pdf/SkPDFDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPDFDevice.h"
 
 #include "SkAnnotation.h"
 #include "SkBitmapDevice.h"
+#include "SkClipStack.h"
 #include "SkColor.h"
-#include "SkClipStack.h"
 #include "SkData.h"
 #include "SkDraw.h"
 #include "SkGlyphCache.h"
 #include "SkImage_Base.h"
 #include "SkPaint.h"
 #include "SkPath.h"
 #include "SkPathOps.h"
 #include "SkPDFBitmap.h"
 #include "SkPDFFont.h"
 #include "SkPDFFormXObject.h"
 #include "SkPDFGraphicState.h"
 #include "SkPDFResourceDict.h"
 #include "SkPDFShader.h"
 #include "SkPDFStream.h"
 #include "SkPDFTypes.h"
 #include "SkPDFUtils.h"
+#include "SkPaint.h"
+#include "SkPath.h"
+#include "SkPathOps.h"
+#include "SkRRect.h"
 #include "SkRect.h"
-#include "SkRRect.h"
 #include "SkString.h"
 #include "SkSurface.h"
+#include "SkTSet.h"
+#include "SkTemplates.h"
 #include "SkTextFormatParams.h"
-#include "SkTemplates.h"
 #include "SkTypefacePriv.h"
-#include "SkTSet.h"
 
 #define DPI_FOR_RASTER_SCALE_ONE 72
 
 // Utility functions
 
 static void emit_pdf_color(SkColor color, SkWStream* result) {
     SkASSERT(SkColorGetA(color) == 0xFF);  // We handle alpha elsewhere.
     SkScalar colorMax = SkIntToScalar(0xFF);
     SkPDFScalar::Append(
             SkScalarDiv(SkIntToScalar(SkColorGetR(color)), colorMax), result);
@@ skipping 2102 matching lines @@
         return;
     }
     SkAutoTUnref<SkPDFObject> image(SkPDFBitmap::Create(fCanon, subsetBitmap));
     if (!image) {
         return;
     }
 
     SkPDFUtils::DrawFormXObject(this->addXObjectResource(image.get()),
                                 &content.entry()->fContent);
 }