Enable flattening of SkRecordedDrawable

src/core/SkReadBuffer.cpp

Index: src/core/SkReadBuffer.cpp
diff --git a/src/core/SkReadBuffer.cpp b/src/core/SkReadBuffer.cpp
index 70b0d13a40dfe627946b3b792c686092474db429..5110af9845adc8dfb2ab2daf9cf08877d72680cc 100644
--- a/src/core/SkReadBuffer.cpp
+++ b/src/core/SkReadBuffer.cpp
@@ -9,6 +9,10 @@
 #include "SkErrorInternals.h"
 #include "SkImage.h"
 #include "SkImageGenerator.h"
+#include "SkPictureData.h"
+#include "SkPicturePlayback.h"
+#include "SkPictureRecord.h"
+#include "SkPictureRecorder.h"
 #include "SkReadBuffer.h"
 #include "SkStream.h"
 #include "SkTypeface.h"
@@ -419,3 +423,27 @@ void SkReadBuffer::skipFlattenable() {
     uint32_t sizeRecorded = fReader.readU32();
     fReader.skip(sizeRecorded);
 }
+
+static sk_sp<SkFlattenable> unflatten_recorded_drawable(SkReadBuffer& buffer) {

[msarett, 2016/04/25 16:40:38]

Maybe this function belongs in a different file?

+    // Read the bounds.
+    SkRect bounds;
+    buffer.readRect(&bounds);
+
+    // Unflatten into a SkPictureData.
+    SkPictInfo info;
+    info.fCullRect = bounds;
+    SkAutoTDelete<SkPictureData> pictureData(SkPictureData::CreateFromBuffer(buffer, info));
+    if (!pictureData) {
+        return nullptr;
+    }
+
+    // Create a drawable.
+    SkPicturePlayback playback(pictureData);
+    SkPictureRecorder recorder;
+    playback.draw(recorder.beginRecording(bounds), nullptr, &buffer);
+    return recorder.finishRecordingAsDrawable();
+}
+
+void SkReadBuffer::initDrawableFactories() {
+    this->setCustomFactory(SkString("SkRecordedDrawable"), unflatten_recorded_drawable);
+}