Import Dart bindings as of Blink r188698. This merely copies the files over and does not attach any…

sky/engine/bindings-dart/core/dart/shared_lib/DartNativeExtensionsWin.cpp

Index: sky/engine/bindings-dart/core/dart/shared_lib/DartNativeExtensionsWin.cpp
diff --git a/sky/engine/core/animation/animatable/AnimatableLengthPoint3D.cpp b/sky/engine/bindings-dart/core/dart/shared_lib/DartNativeExtensionsWin.cpp
similarity index 61%
copy from sky/engine/core/animation/animatable/AnimatableLengthPoint3D.cpp
copy to sky/engine/bindings-dart/core/dart/shared_lib/DartNativeExtensionsWin.cpp
index 9fedc085ff984e927c010bf1c801f99c83f0f2f7..2508a3cff13ecb16458bafa314715e576aed8f01 100644
--- a/sky/engine/core/animation/animatable/AnimatableLengthPoint3D.cpp
+++ b/sky/engine/bindings-dart/core/dart/shared_lib/DartNativeExtensionsWin.cpp
@@ -28,24 +28,40 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "sky/engine/config.h"
-#include "sky/engine/core/animation/animatable/AnimatableLengthPoint3D.h"
+#include "config.h"
+#include "bindings/core/dart/shared_lib/DartNativeExtensions.h"
+
+#if defined(ENABLE_DART_NATIVE_EXTENSIONS)
+#if OS(WIN)
+#include "wtf/text/StringUTF8Adaptor.h"
+#include <string>
+
 
 namespace blink {
 
-PassRefPtr<AnimatableValue> AnimatableLengthPoint3D::interpolateTo(const AnimatableValue* value, double fraction) const
+Dart_Handle DartNativeExtensions::loadExtensionLibrary(const String& libraryPath, const String& libraryName, void** libraryHandle)
 {
-    const AnimatableLengthPoint3D* lengthPoint = toAnimatableLengthPoint3D(value);
-    return AnimatableLengthPoint3D::create(
-        AnimatableValue::interpolate(this->x(), lengthPoint->x(), fraction),
-        AnimatableValue::interpolate(this->y(), lengthPoint->y(), fraction),
-        AnimatableValue::interpolate(this->z(), lengthPoint->z(), fraction));
+    String libraryFile = libraryPath;
+    libraryFile.append(libraryName);
+    libraryFile.append(".dll");
+
+    *libraryHandle = LoadLibraryW(libraryFile.characters16());
+    if (!*libraryHandle) {
+        return Dart_NewApiError("Error loading library.");
+    }
+    return Dart_Null();
 }
 
-bool AnimatableLengthPoint3D::equalTo(const AnimatableValue* value) const
+Dart_Handle DartNativeExtensions::resolveSymbol(void* libHandle, const String& symbolName, void** symbol)
 {
-    const AnimatableLengthPoint3D* lengthPoint = toAnimatableLengthPoint3D(value);
-    return x()->equals(lengthPoint->x()) && y()->equals(lengthPoint->y()) && z()->equals(lengthPoint->z());
+    *symbol = GetProcAddress(reinterpret_cast<HMODULE>(libHandle), symbolName.characters16());
+    if (!*symbol) {
+        return Dart_NewApiError("Error resolving symbol.");
+    }
+    return Dart_Null();
 }
 
 }
+
+#endif // OS(WIN)
+#endif // defined(ENABLE_DART_NATIVE_EXTENSIONS)