Enable ios platform view by default (#20671)

shell/platform/darwin/ios/ios_surface.h

@@ -34,8 +34,6 @@ class IOSSurface : public ExternalViewEmbedder {
 
   std::shared_ptr<IOSContext> GetContext() const;
 
-  ExternalViewEmbedder* GetExternalViewEmbedderIfEnabled();
-
   virtual bool IsValid() const = 0;
 
   virtual void UpdateStorageSizeIfNecessary() = 0;

shell/platform/darwin/ios/ios_surface.mm

@@ -13,15 +13,6 @@
 
 namespace flutter {
 
-// The name of the Info.plist flag to enable the embedded iOS views preview.
-constexpr const char* kEmbeddedViewsPreview = "io.flutter.embedded_views_preview";
-
-bool IsIosEmbeddedViewsPreviewEnabled() {
-  static bool preview_enabled =
-      [[[NSBundle mainBundle] objectForInfoDictionaryKey:@(kEmbeddedViewsPreview)] boolValue];
-  return preview_enabled;
-}
-
 std::unique_ptr<IOSSurface> IOSSurface::Create(
     std::shared_ptr<IOSContext> context,
     fml::scoped_nsobject<CALayer> layer,
@@ -75,14 +66,6 @@ SkCanvas* IOSSurface::GetRootCanvas() {
   return nullptr;
 }
 
-ExternalViewEmbedder* IOSSurface::GetExternalViewEmbedderIfEnabled() {
-  if (IsIosEmbeddedViewsPreviewEnabled()) {
-    return this;
-  } else {
-    return nullptr;
-  }
-}
-
 // |ExternalViewEmbedder|
 void IOSSurface::CancelFrame() {
   TRACE_EVENT0("flutter", "IOSSurface::CancelFrame");

shell/platform/darwin/ios/ios_surface_gl.mm

@@ -84,7 +84,7 @@ bool IOSSurfaceGL::GLContextPresent() {
 
 // |GPUSurfaceGLDelegate|
 ExternalViewEmbedder* IOSSurfaceGL::GetExternalViewEmbedder() {
-  return GetExternalViewEmbedderIfEnabled();
+  return this;
 }
 
 }  // namespace flutter

shell/platform/darwin/ios/ios_surface_metal.mm

@@ -55,7 +55,7 @@ std::unique_ptr<Surface> IOSSurfaceMetal::CreateGPUSurface(GrDirectContext* /* u
 
 // |GPUSurfaceDelegate|
 ExternalViewEmbedder* IOSSurfaceMetal::GetExternalViewEmbedder() {
-  return GetExternalViewEmbedderIfEnabled();
+  return this;
 }
 
 }  // namespace flutter

shell/platform/darwin/ios/ios_surface_software.mm

@@ -124,7 +124,7 @@ bool IOSSurfaceSoftware::PresentBackingStore(sk_sp<SkSurface> backing_store) {
 
 // |GPUSurfaceSoftwareDelegate|
 ExternalViewEmbedder* IOSSurfaceSoftware::GetExternalViewEmbedder() {
-  return GetExternalViewEmbedderIfEnabled();
+  return this;
 }
 
 }  // namespace flutter

testing/scenario_app/ios/Scenarios/Scenarios/Info.plist

@@ -41,7 +41,5 @@
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
-	<key>io.flutter.embedded_views_preview</key>
-	<true/>
 </dict>
 </plist>