Remove implicit conversions from scoped_refptr to T* in cc/

cc/resources/picture_pile_base.cc

Index: cc/resources/picture_pile_base.cc
diff --git a/cc/resources/picture_pile_base.cc b/cc/resources/picture_pile_base.cc
index 4f84bd9bbfeeca0273e61ac81d7a78d878a27c0b..b1132ad369d2836eee3092476041b8c4385ed6ee 100644
--- a/cc/resources/picture_pile_base.cc
+++ b/cc/resources/picture_pile_base.cc
@@ -218,7 +218,7 @@ bool PicturePileBase::PictureInfo::Invalidate(int frame_number) {
   AdvanceInvalidationHistory(frame_number);
   invalidation_history_.set(0);
 
-  bool did_invalidate = !!picture_;
+  bool did_invalidate = !!picture_.get();
   picture_ = NULL;
   return did_invalidate;
 }
@@ -231,7 +231,7 @@ bool PicturePileBase::PictureInfo::NeedsRecording(int frame_number,
   // need a recording if we're within frequent invalidation distance threshold
   // or the invalidation is not frequent enough (below invalidation frequency
   // threshold).
-  return !picture_ &&
+  return !picture_.get() &&
          ((distance_to_visible <= kFrequentInvalidationDistanceThreshold) ||
           (GetInvalidationFrequency() < kInvalidationFrequencyThreshold));
 }