Update cc snapshot to WK r126941

cc/CCThreadProxy.cpp

Index: cc/CCThreadProxy.cpp
diff --git a/cc/CCThreadProxy.cpp b/cc/CCThreadProxy.cpp
index 8d0a8b032eccdf8aa20311904f068c82fca25a94..e90f3fe0cf0130542c4a44ec258c5109cee6bb7a 100644
--- a/cc/CCThreadProxy.cpp
+++ b/cc/CCThreadProxy.cpp
@@ -294,6 +294,7 @@ void CCThreadProxy::didLoseContextOnImplThread()
 {
     ASSERT(isImplThread());
     TRACE_EVENT0("cc", "CCThreadProxy::didLoseContextOnImplThread");
+    m_currentTextureUpdateControllerOnImplThread.clear();
     m_schedulerOnImplThread->didLoseContext();
 }
 
@@ -599,8 +600,7 @@ void CCThreadProxy::scheduledActionCommit()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::scheduledActionCommit");
     ASSERT(isImplThread());
-    ASSERT(m_currentTextureUpdateControllerOnImplThread);
-    ASSERT(!m_currentTextureUpdateControllerOnImplThread->hasMoreUpdates());
+    ASSERT(!hasMoreResourceUpdates());
     ASSERT(m_commitCompletionEventOnImplThread);
 
     m_currentTextureUpdateControllerOnImplThread.clear();