Promote fuseboxScreenshotCaptureEnabled to stable (#57540)

Summary:
Pull Request resolved: #57540

This feature is fully implemented, stable, and isolated — enable for all.

See also react/react-native-devtools-frontend#252.

Changelog:
[General][Added] - **React Native DevTools**: Users and agents can now capture app screenshots via the `Page.captureScreenshot` command

Reviewed By: GijsWeterings

Differential Revision: D111894234

fbshipit-source-id: eaab5cb00c1a922961382dd64f616c7bf215032f

Author: huntie

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsDefaults.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<a31073b853e102dfad7558805194f5a3>>
+ * @generated SignedSource<<8a117541421f413e517e1be1acf8be7d>>
  */
 
 /**
@@ -141,7 +141,7 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun fuseboxNetworkInspectionEnabled(): Boolean = true
 
-  override fun fuseboxScreenshotCaptureEnabled(): Boolean = false
+  override fun fuseboxScreenshotCaptureEnabled(): Boolean = true
 
   override fun fuseboxWebSocketEventsEnabled(): Boolean = false
 

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsOverrides_RNOSS_Experimental_Android.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<af67163b6d34bb714b783658501ca6e8>>
+ * @generated SignedSource<<41f83a9921de88f659ddc22172344226>>
  */
 
 /**
@@ -31,8 +31,6 @@ public open class ReactNativeFeatureFlagsOverrides_RNOSS_Experimental_Android :
 
   override fun fuseboxFrameRecordingEnabled(): Boolean = true
 
-  override fun fuseboxScreenshotCaptureEnabled(): Boolean = true
-
   override fun preventShadowTreeCommitExhaustion(): Boolean = true
 
   override fun useSharedAnimatedBackend(): Boolean = true

packages/react-native/ReactCommon/jsinspector-modern/tests/HostTargetTest.cpp

@@ -1632,11 +1632,15 @@ TEST_F(HostTargetTest, TracingDelegateIsNotifiedOnDirectTracingCall) {
   page_->stopTracing();
 }
 
-TEST_F(HostTargetProtocolTest, CaptureScreenshotNotSupportedWhenFlagDisabled) {
+TEST_F(HostTargetProtocolTest, CaptureScreenshotReturnsData) {
+  EXPECT_CALL(hostTargetDelegate_, captureScreenshot(_))
+      .WillOnce(Return(std::optional<std::string>("c2NyZWVuc2hvdA==")))
+      .RetiresOnSaturation();
   EXPECT_CALL(
       fromPage(),
       onMessage(JsonParsed(AllOf(
-          AtJsonPtr("/error/code", Eq(-32601)), AtJsonPtr("/id", Eq(1))))))
+          AtJsonPtr("/id", Eq(1)),
+          AtJsonPtr("/result/data", Eq("c2NyZWVuc2hvdA=="))))))
       .RetiresOnSaturation();
   toPage_->sendMessage(R"({
                            "id": 1,

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsDefaults.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<2e19fd4b007d0ae7397babcc605b5783>>
+ * @generated SignedSource<<96887197bdbba2c13e11046b73572e56>>
  */
 
 /**
@@ -264,7 +264,7 @@ class ReactNativeFeatureFlagsDefaults : public ReactNativeFeatureFlagsProvider {
   }
 
   bool fuseboxScreenshotCaptureEnabled() override {
-    return false;
+    return true;
   }
 
   bool fuseboxWebSocketEventsEnabled() override {

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsOverridesOSSExperimental.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<bcd31ae20312c38ff0bbc8fdeac5ce36>>
+ * @generated SignedSource<<630f900c13eb68232717fc28528253e2>>
  */
 
 /**
@@ -43,10 +43,6 @@ class ReactNativeFeatureFlagsOverridesOSSExperimental : public ReactNativeFeatur
     return true;
   }
 
-  bool fuseboxScreenshotCaptureEnabled() override {
-    return true;
-  }
-
   bool preventShadowTreeCommitExhaustion() override {
     return true;
   }

packages/react-native/scripts/featureflags/ReactNativeFeatureFlags.config.js

@@ -680,15 +680,15 @@ const definitions: FeatureFlagDefinitions = {
       ossReleaseStage: 'none',
     },
     fuseboxScreenshotCaptureEnabled: {
-      defaultValue: false,
+      defaultValue: true,
       metadata: {
         dateAdded: '2026-04-01',
         description:
           'Enable Page.captureScreenshot CDP method support in the React Native DevTools CDP backend. This flag is global and should not be changed across React Host lifetimes.',
         expectedReleaseValue: true,
         purpose: 'experimentation',
       },
-      ossReleaseStage: 'experimental',
+      ossReleaseStage: 'stable',
     },
     fuseboxWebSocketEventsEnabled: {
       defaultValue: false,

packages/react-native/src/private/featureflags/ReactNativeFeatureFlags.js

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<040d7a7365dfe19ee8721892e5e5551d>>
+ * @generated SignedSource<<cfeef081e12018ec3cb6f9d76049ce5e>>
  * @flow strict
  * @noformat
  */
@@ -445,7 +445,7 @@ export const fuseboxNetworkInspectionEnabled: Getter<boolean> = createNativeFlag
 /**
  * Enable Page.captureScreenshot CDP method support in the React Native DevTools CDP backend. This flag is global and should not be changed across React Host lifetimes.
  */
-export const fuseboxScreenshotCaptureEnabled: Getter<boolean> = createNativeFlagGetter('fuseboxScreenshotCaptureEnabled', false);
+export const fuseboxScreenshotCaptureEnabled: Getter<boolean> = createNativeFlagGetter('fuseboxScreenshotCaptureEnabled', true);
 /**
  * Enable reporting of WebSocket network events (`Network.webSocket*` CDP events) to the React Native DevTools CDP backend. Requires `fuseboxNetworkInspectionEnabled`.
  */