Replace SkPicture(SkStream) constructors with a factory.

SkPicture:
Remove the constructors which take an SkStream as an argument. Rather
than having to check a variable for success, the factory will return
NULL on failure.
Add a protected function for determining if an SkStream is an SKP
to share code with SkTimedPicture.
In the factory, check for a NULL SkStream.
Use a default decoder (from BUG:
https://code.google.com/p/skia/issues/detail?id=1325)

SkDebuggerGUI:
Call SkPicture::CreateFromStream when necessary.
Write a factory for creating SkTimedPictures and use it.

Use the factory throughout tools.

Add include/lazy to utils and effects gyp include_dirs so SkPicture.h
can reference SkImageDecoder.h which references SkBitmapFactory.h (in
include/lazy).

Changes code Chromium uses, so this will require a temporary Skia
and then a change to Chromium to use the new Skia code.

TODO: Create a decoder that does nothing to be used by pinspect,
lua pictures, etc, and allow it to not assert in SkOrderedReadBuffer.

R=reed@google.com

Review URL: https://codereview.chromium.org/17113004

git-svn-id: http://skia.googlecode.com/svn/trunk@9822 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/pinspect.cpp b/tools/pinspect.cpp
index f6304e6..969d87c 100644
--- a/tools/pinspect.cpp
+++ b/tools/pinspect.cpp
@@ -40,11 +40,10 @@
     }
 
     stream.rewind();
-    bool success = false;
-    SkPicture* pic = SkNEW_ARGS(SkPicture, (&stream, &success, &lazy_decode_bitmap));
-    if (!success) {
+    SkPicture* pic = SkPicture::CreateFromStream(&stream, &lazy_decode_bitmap);
+    if (NULL == pic) {
         SkDebugf("Could not create SkPicture: %s\n", path);
-        return pic;
+        return NULL;
     }
     printf("picture size:[%d %d]\n", pic->width(), pic->height());
     return pic;