Added Dartium changes onto 45.0.2454.104

Source/wtf/ArrayBufferContents.cpp

Index: Source/wtf/ArrayBufferContents.cpp
diff --git a/Source/wtf/ArrayBufferContents.cpp b/Source/wtf/ArrayBufferContents.cpp
index 2d03a4107e9fc6fee62e13be1ee3dada0c297b12..4b29a8212d889614e5bb99991c87f5f133c34526 100644
--- a/Source/wtf/ArrayBufferContents.cpp
+++ b/Source/wtf/ArrayBufferContents.cpp
@@ -59,6 +59,7 @@ ArrayBufferContents::ArrayBufferContents(
 {
     if (data) {
         m_holder->adopt(data, sizeInBytes, isShared);
+        m_holder->setAllocated(false);
     } else {
         ASSERT(!sizeInBytes);
         sizeInBytes = 0;
@@ -116,16 +117,19 @@ void ArrayBufferContents::freeMemory(void* data, size_t size)
 
 ArrayBufferContents::DataHolder::DataHolder()
     : m_data(nullptr)
+    , m_malloc(false)
     , m_sizeInBytes(0)
     , m_isShared(NotShared) { }
 
 ArrayBufferContents::DataHolder::~DataHolder()
 {
-    ArrayBufferContents::freeMemory(m_data, m_sizeInBytes);
+    if (m_malloc)
+        ArrayBufferContents::freeMemory(m_data, m_sizeInBytes);
 
     m_data = nullptr;
     m_sizeInBytes = 0;
     m_isShared = NotShared;
+    m_malloc = false;
 }
 
 void ArrayBufferContents::DataHolder::allocateNew(unsigned sizeInBytes, SharingType isShared, InitializationPolicy policy)
@@ -136,6 +140,7 @@ void ArrayBufferContents::DataHolder::allocateNew(unsigned sizeInBytes, SharingT
     m_data = data;
     m_sizeInBytes = data ? sizeInBytes : 0;
     m_isShared = isShared;
+    m_malloc = true;
 }
 
 void ArrayBufferContents::DataHolder::adopt(void* data, unsigned sizeInBytes, SharingType isShared)