Added SkImageFilter serialization

content/common/cc_messages.cc

Index: content/common/cc_messages.cc
diff --git a/content/common/cc_messages.cc b/content/common/cc_messages.cc
index 9065a946ad3bc5ff857e30610170e469a4998575..ddb4e1fb2dd833082b8daf3b309ba0f823db80c8 100644
--- a/content/common/cc_messages.cc
+++ b/content/common/cc_messages.cc
@@ -7,6 +7,8 @@
 #include "cc/output/compositor_frame.h"
 #include "cc/output/filter_operations.h"
 #include "content/public/common/common_param_traits.h"
+#include "third_party/skia/src/core/SkOrderedReadBuffer.h"
+#include "third_party/skia/src/core/SkOrderedWriteBuffer.h"
 #include "ui/gfx/transform.h"
 
 namespace IPC {
@@ -185,6 +187,41 @@ void ParamTraits<cc::FilterOperations>::Log(
   l->append(")");
 }
 
+void ParamTraits<skia::RefPtr<SkImageFilter> >::Write(
+    Message* m, const param_type& p) {
+  SkImageFilter* filter = p.get();
+  if (filter) {
+    SkOrderedWriteBuffer buffer(1024);
+    buffer.setFlags(SkOrderedWriteBuffer::kCrossProcess_Flag);
+    buffer.writeFlattenable(filter);
+    buffer.writeToMemory(m->BeginWriteData(buffer.bytesWritten()));
+  } else {
+    m->WriteData(0, 0);
+  }
+}
+
+bool ParamTraits<skia::RefPtr<SkImageFilter> >::Read(
+    const Message* m, PickleIterator* iter, param_type* r) {
+  const char* data = 0;
+  int length = 0;
+  if (!m->ReadData(iter, &data, &length))
+    return false;
+  if (length > 0) {
+    SkOrderedReadBuffer buffer(data, length);
+    *r = skia::AdoptRef(buffer.readFlattenableT<SkImageFilter>());

[piman, 2013/07/30 19:57:35]

Yes, obviously we can't land this until we know it's safe (otherwise it's
opening a security hole).

We can put this behind a flag though.

[sugoi1, 2013/07/30 20:08:21]

All right, if putting it behind a flag is an acceptable option and isn't too
complicated in this case (it shouldn't be), I'll do that.

+  } else {
+    r->clear();
+  }
+  return true;
+}
+
+void ParamTraits<skia::RefPtr<SkImageFilter> >::Log(
+    const param_type& p, std::string* l) {
+  l->append("(");
+  LogParam(p.get() ? p->countInputs() : 0, l);
+  l->append(")");
+}
+
 void ParamTraits<gfx::Transform>::Write(
     Message* m, const param_type& p) {
   WriteParam(m, p.matrix().getDouble(0, 0));