Bug 1316206 - Fix RefPtr assignments from 0 - r=froydnj

Giving '0' (literal zero) to RefPtr is now ambiguous, as both
RefPtr(decltype(nullptr)) and RefPtr(T*) could be used.
In any case, our coding standards mandate the use of 'nullptr' for pointers.
So I'm changing all zeroes into nullptr's where necessary.

MozReview-Commit-ID: A458A4e9for

dom/media/webspeech/recognition/SpeechRecognition.h

@@ -255,8 +255,8 @@ class SpeechEvent : public Runnable
 public:
   SpeechEvent(SpeechRecognition* aRecognition, SpeechRecognition::EventType aType)
   : mAudioSegment(0)
-  , mRecognitionResultList(0)
-  , mError(0)
+  , mRecognitionResultList(nullptr)
+  , mError(nullptr)
   , mRecognition(aRecognition)
   , mType(aType)
   , mTrackRate(0)

editor/libeditor/WSRunObject.h

@@ -296,7 +296,7 @@ protected:
     char16_t mChar;
 
     WSPoint()
-      : mTextNode(0)
+      : mTextNode(nullptr)
       , mOffset(0)
       , mChar(0)
     {}

editor/txmgr/nsTransactionList.cpp

@@ -19,7 +19,7 @@ NS_IMPL_ISUPPORTS(nsTransactionList, nsITransactionList)
 
 nsTransactionList::nsTransactionList(nsITransactionManager *aTxnMgr, nsTransactionStack *aTxnStack)
   : mTxnStack(aTxnStack)
-  , mTxnItem(0)
+  , mTxnItem(nullptr)
 {
   if (aTxnMgr)
     mTxnMgr = do_GetWeakReference(aTxnMgr);
@@ -36,7 +36,7 @@ nsTransactionList::nsTransactionList(nsITransactionManager *aTxnMgr, nsTransacti
 nsTransactionList::~nsTransactionList()
 {
   mTxnStack = 0;
-  mTxnItem  = 0;
+  mTxnItem  = nullptr;
 }
 
 NS_IMETHODIMP nsTransactionList::GetNumItems(int32_t *aNumItems)

ipc/chromium/src/base/object_watcher.cc

@@ -38,7 +38,7 @@ public:
 
 //-----------------------------------------------------------------------------
 
-ObjectWatcher::ObjectWatcher() : watch_(NULL) {
+ObjectWatcher::ObjectWatcher() : watch_(nullptr) {
 }
 
 ObjectWatcher::~ObjectWatcher() {
@@ -99,7 +99,7 @@ bool ObjectWatcher::StopWatching() {
   // anything once it is run.
   watch_->watcher = NULL;
 
-  watch_ = NULL;
+  watch_ = nullptr;
 
   MessageLoop::current()->RemoveDestructionObserver(this);
   return true;

ipc/chromium/src/base/timer.cc

@@ -12,8 +12,8 @@ namespace base {
 
 void BaseTimer_Helper::OrphanDelayedTask() {
   if (delayed_task_) {
-    delayed_task_->timer_ = NULL;
-    delayed_task_ = NULL;
+    delayed_task_->timer_ = nullptr;
+    delayed_task_ = nullptr;
   }
 }
 

ipc/chromium/src/base/timer.h

@@ -176,7 +176,7 @@ class BaseTimer : public BaseTimer_Helper {
         // Task is old.  So, if the Timer points to a different task, assume
         // that the Timer has already taken care of properly setting the task.
         if (self->delayed_task_ == this)
-          self->delayed_task_ = NULL;
+          self->delayed_task_ = nullptr;
         // By now the delayed_task_ in the Timer does not point to us anymore.
         // We should reset our own timer_ because the Timer can not do this
         // for us in its destructor.

netwerk/cache/nsDiskCacheDeviceSQL.cpp

@@ -1413,7 +1413,7 @@ nsOfflineCacheDevice::Shutdown()
   if (NS_FAILED(rv))
     NS_WARNING("Failed to clean up namespaces.");
 
-  mEvictionFunction = 0;
+  mEvictionFunction = nullptr;
 
   mStatement_CacheSize = nullptr;
   mStatement_ApplicationCacheSize = nullptr;

netwerk/protocol/http/HttpChannelParent.cpp

@@ -787,7 +787,7 @@ bool
 HttpChannelParent::RecvDocumentChannelCleanup()
 {
   // From now on only using mAssociatedContentSecurity.  Free everything else.
-  mChannel = 0;          // Reclaim some memory sooner.
+  mChannel = nullptr;          // Reclaim some memory sooner.
   mCacheEntry = 0;  // Else we'll block other channels reading same URI
   return true;
 }

netwerk/streamconv/converters/nsMultiMixedConv.cpp

@@ -913,7 +913,7 @@ nsMultiMixedConv::SendStop(nsresult aStatus) {
             (void) loadGroup->RemoveRequest(mPartChannel, mContext, aStatus);
     }
 
-    mPartChannel = 0;
+    mPartChannel = nullptr;
     return rv;
 }
 

toolkit/components/places/tests/cpp/mock_Link.h

@@ -40,7 +40,7 @@ public:
     mHandler(aState);
 
     // Break the cycle so the object can be destroyed.
-    mDeathGrip = 0;
+    mDeathGrip = nullptr;
   }
 
   virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const override