Implement Image in Fabric C++ Android

Summary: This diff adds support for image views in Android

Reviewed By: shergin

Differential Revision: D9757712

fbshipit-source-id: 8d33e04c8ac4a670af6ca49bb3b9dccc69d52e40

ReactCommon/fabric/components/image/ImageComponentDescriptor.h

@@ -24,7 +24,7 @@ class ImageComponentDescriptor final:
 public:
   ImageComponentDescriptor(SharedEventDispatcher eventDispatcher, const SharedContextContainer &contextContainer):
     ConcreteComponentDescriptor(eventDispatcher),
-    imageManager_(contextContainer->getInstance<SharedImageManager>()) {}
+    imageManager_(contextContainer ? contextContainer->getInstance<SharedImageManager>() : nullptr) {}
 
   void adopt(UnsharedShadowNode shadowNode) const override {
     ConcreteComponentDescriptor::adopt(shadowNode);

ReactCommon/fabric/imagemanager/ImageRequest.cpp

@@ -17,6 +17,8 @@ public:
     std::logic_error("Image no longer needed.") {}
 };
 
+ImageRequest::ImageRequest() {}
+
 ImageRequest::ImageRequest(const ImageSource &imageSource, folly::Future<ImageResponse> &&responseFuture):
   imageSource_(imageSource),
   responseFutureSplitter_(folly::splitFuture(std::move(responseFuture))) {}

ReactCommon/fabric/imagemanager/ImageRequest.h

@@ -41,6 +41,8 @@ public:
    */
   ImageRequest(const ImageSource &imageSource, folly::Future<ImageResponse> &&responseFuture);
 
+  ImageRequest();
+
   /*
    * The move constructor.
    */

ReactCommon/fabric/imagemanager/platform/android/ImageManager.cpp

@@ -20,6 +20,7 @@ ImageManager::~ImageManager() {
 
 ImageRequest ImageManager::requestImage(const ImageSource &imageSource) const {
   // Not implemented.
+  return {};
 }
 
 } // namespace react