Add a runtime flag for ImageCapture

https://bugs.webkit.org/show_bug.cgi?id=265188
rdar://118185086

Reviewed by Eric Carlson.

We add a runtime flag for ImageCapture to enable it or disable it.
We make it off by default.
We disable it even if enabled by default for zoom until we figure out what the issue might be.

Manually tested.

* Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml:
* Source/WebCore/Modules/mediastream/ImageCapture.idl:
* Source/WebCore/page/Quirks.cpp:
(WebCore::Quirks::shouldAllowImageCaptureQuirk const):
* Source/WebCore/page/Quirks.h:

Canonical link: https://commits.webkit.org/271048@main

Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml

@@ -3111,6 +3111,21 @@ ImageAnimationControlEnabled:
     WebCore:
       default: true
 
+ImageCaptureEnabled:
+  type: bool
+  status: testable
+  category: media
+  humanReadableName: "Image Capture API"
+  humanReadableDescription: "Enable Image Capture API"
+  condition: ENABLE(MEDIA_STREAM)
+  defaultValue:
+    WebKitLegacy:
+      default: false
+    WebKit:
+      default: false
+    WebCore:
+      default: false
+
 ImageControlsEnabled:
   type: bool
   status: unstable

Source/WebCore/Modules/mediastream/ImageCapture.idl

@@ -28,6 +28,8 @@
     Conditional=MEDIA_STREAM,
     SecureContext,
     JSGenerateToNativeObject,
+    EnabledBySetting=ImageCaptureEnabled,
+    DisabledByQuirk=shouldDisableImageCapture,
     Exposed=Window
 ] interface ImageCapture {
     [CallWith=CurrentDocument] constructor(MediaStreamTrack videoTrack);

Source/WebCore/page/Quirks.cpp

@@ -984,6 +984,18 @@ bool Quirks::shouldEnableLegacyGetUserMediaQuirk() const
     }
     return m_shouldEnableLegacyGetUserMediaQuirk.value();
 }
+
+// zoom.us rdar://118185086
+bool Quirks::shouldDisableImageCaptureQuirk() const
+{
+    if (!needsQuirks())
+        return false;
+
+    if (!m_shouldDisableImageCaptureQuirk)
+        m_shouldDisableImageCaptureQuirk = isDomain("zoom.us"_s);
+
+    return m_shouldDisableImageCaptureQuirk.value();
+}
 #endif
 
 // hulu.com rdar://55041979

Source/WebCore/page/Quirks.h

@@ -117,6 +117,7 @@ class Quirks {
 
 #if ENABLE(MEDIA_STREAM)
     bool shouldEnableLegacyGetUserMediaQuirk() const;
+    bool shouldDisableImageCaptureQuirk() const;
 #endif
 
     bool needsCanPlayAfterSeekedQuirk() const;
@@ -218,6 +219,7 @@ class Quirks {
     mutable std::optional<bool> m_requiresUserGestureToLoadInPictureInPicture;
 #if ENABLE(MEDIA_STREAM)
     mutable std::optional<bool> m_shouldEnableLegacyGetUserMediaQuirk;
+    mutable std::optional<bool> m_shouldDisableImageCaptureQuirk;
 #endif
     mutable std::optional<bool> m_blocksReturnToFullscreenFromPictureInPictureQuirk;
     mutable std::optional<bool> m_blocksEnteringStandardFullscreenFromPictureInPictureQuirk;