Allow creating a picture from skp to fail.

debugger/QT/SkDebuggerGUI.cpp

Index: debugger/QT/SkDebuggerGUI.cpp
diff --git a/debugger/QT/SkDebuggerGUI.cpp b/debugger/QT/SkDebuggerGUI.cpp
index d444152eabe9007d3849a0249422d53df886accb..e8701a8ddf2b6edde27ab65ac60f19a1731ffa1a 100644
--- a/debugger/QT/SkDebuggerGUI.cpp
+++ b/debugger/QT/SkDebuggerGUI.cpp
@@ -147,10 +147,10 @@ void SkDebuggerGUI::showDeletes() {
 // offsets to individual commands.
 class SkTimedPicturePlayback : public SkPicturePlayback {
 public:
-    SkTimedPicturePlayback(SkStream* stream, const SkPictInfo& info,
+    SkTimedPicturePlayback(SkStream* stream, const SkPictInfo& info, bool* isValid,
                            SkPicture::InstallPixelRefProc proc,
                            const SkTDArray<bool>& deletedCommands)
-        : INHERITED(stream, info, proc)
+        : INHERITED(stream, info, isValid, proc)
         , fSkipCommands(deletedCommands)
         , fTot(0.0)
         , fCurCommand(0) {
@@ -249,8 +249,13 @@ public:
         SkTimedPicturePlayback* playback;
         // Check to see if there is a playback to recreate.
         if (stream->readBool()) {
+            bool isValid = false;
             playback = SkNEW_ARGS(SkTimedPicturePlayback,
-                                  (stream, info, proc, deletedCommands));
+                                   (stream, info, &isValid, proc, deletedCommands));
+            if (!isValid) {
+                SkDELETE(playback);
+                return NULL;
+            }
         } else {
             playback = NULL;
         }