[Blob] Dependencies for blob storage testing

Source/platform/exported/WebThreadSafeData.cpp

Index: Source/platform/exported/WebThreadSafeData.cpp
diff --git a/Source/platform/exported/WebThreadSafeData.cpp b/Source/platform/exported/WebThreadSafeData.cpp
index 3341eaf423c73dd608fe7a3da9e5945c4aba7bc2..cafe6c1b97fff6838068c22e064d86aede1cc74e 100644
--- a/Source/platform/exported/WebThreadSafeData.cpp
+++ b/Source/platform/exported/WebThreadSafeData.cpp
@@ -35,6 +35,12 @@
 
 namespace blink {
 
+WebThreadSafeData::WebThreadSafeData(const char* data, size_t length)
+{
+    m_private = RawData::create().leakRef();
+    m_private->mutableData()->append(data, length);
+}
+
 void WebThreadSafeData::reset()
 {
     m_private.reset();
@@ -64,6 +70,17 @@ WebThreadSafeData::WebThreadSafeData(const PassRefPtr<RawData>& data)
 {
 }
 
+WebThreadSafeData::WebThreadSafeData(const WebThreadSafeData& other)
+{
+    m_private = other.m_private;
+}
+
+WebThreadSafeData& WebThreadSafeData::operator=(const WebThreadSafeData& other)
+{
+    m_private = other.m_private;
+    return *this;
+}
+
 WebThreadSafeData& WebThreadSafeData::operator=(const PassRefPtr<RawData>& data)
 {
     m_private = data;