Added Dartium changes onto 45.0.2454.104

Source/bindings/core/dart/DartPersistentValue.cpp

Index: Source/bindings/core/dart/DartPersistentValue.cpp
diff --git a/Source/web/PrerendererClientImpl.cpp b/Source/bindings/core/dart/DartPersistentValue.cpp
similarity index 76%
copy from Source/web/PrerendererClientImpl.cpp
copy to Source/bindings/core/dart/DartPersistentValue.cpp
index dec8343abca77309f743bc562c29e63c95430b15..400f2f00e925e36f55a1b81a208711551570e7f6 100644
--- a/Source/web/PrerendererClientImpl.cpp
+++ b/Source/bindings/core/dart/DartPersistentValue.cpp
@@ -26,30 +26,36 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
  */
-
 #include "config.h"
-#include "web/PrerendererClientImpl.h"
+#include "bindings/core/dart/DartPersistentValue.h"
 
-#include "platform/Prerender.h"
-#include "public/platform/WebPrerender.h"
-#include "public/web/WebPrerendererClient.h"
-#include "web/WebViewImpl.h"
+#include "bindings/core/dart/DartDOMData.h"
+#include "bindings/core/dart/DartUtilities.h"
 
 namespace blink {
 
-PrerendererClientImpl::PrerendererClientImpl(WebPrerendererClient* client)
-    : m_client(client)
+DartPersistentValue::DartPersistentValue(Dart_Handle value)
+{
+    m_value = Dart_NewPersistentHandle(value);
+}
+
+DartPersistentValue::~DartPersistentValue()
 {
+    clear();
 }
 
-void PrerendererClientImpl::willAddPrerender(Prerender* prerender)
+void DartPersistentValue::clear()
 {
-    if (!m_client)
+    if (!isIsolateAlive())
         return;
-    WebPrerender webPrerender(prerender);
-    m_client->willAddPrerender(&webPrerender);
+
+    if (!m_value)
+        return;
+
+    DartIsolateScope scope(isolate());
+    Dart_DeletePersistentHandle(m_value);
+    m_value = 0;
 }
 
-} // namespace blink
+}