DM: add --pipe

dm/DMPipeTask.h

-#ifndef DMSerializeTask_DEFINED
-#define DMSerializeTask_DEFINED
+#ifndef DMPipeTask_DEFINED
+#define DMPipeTask_DEFINED
 
 #include "DMTask.h"
 #include "SkBitmap.h"
 #include "SkString.h"
 #include "SkTemplates.h"
 #include "gm.h"
 
-// Record a picture, serialize it, deserialize it, then draw it and compare to reference bitmap.
+// Sends a GM through a pipe, draws it, and compares against the reference bitmap.
 
 namespace DM {
 
-class SerializeTask : public Task {
+class PipeTask : public Task {
 
 public:
-    SerializeTask(const Task& parent,
-                  skiagm::GM*,
-                  SkBitmap reference);
+    PipeTask(const Task& parent,

[epoger, 2013/10/28 17:42:15]

please document the parameters

[mtklein, 2013/10/28 19:03:41]

Done.

[epoger, 2013/10/28 19:36:25]

Thanks.

I would prefer javadoc-style comments (as directed in 
https://sites.google.com/site/skiadocs/developer-documentation/contributing-c...
), but I don't think it's a big deal either way.

[mtklein, 2013/10/28 19:41:48]

This not being a library, seems like overkill.

+             skiagm::GM*,
+             SkBitmap reference,
+             bool crossProcess,
+             bool sharedAddressSpace);
 
     virtual void draw() SK_OVERRIDE;
     virtual bool usesGpu() const SK_OVERRIDE { return false; }
     virtual bool shouldSkip() const SK_OVERRIDE;
     virtual SkString name() const SK_OVERRIDE { return fName; }
 
 private:
+    const uint32_t fFlags;
     const SkString fName;
     SkAutoTDelete<skiagm::GM> fGM;
     const SkBitmap fReference;
 };
 
 }  // namespace DM
 
-#endif  // DMSerializeTask_DEFINED
+#endif  // DMPipeTask_DEFINED