Move Canvas and WebGL Image Chromium behind experiments.

content/public/common/content_features.h

Index: content/public/common/content_features.h
diff --git a/content/public/common/content_features.h b/content/public/common/content_features.h
index f915ddae6ebfaeff96c8a7c12e587343ebe3fa8a..da1b5241b112d70ad38b12c070996ad897c72f2e 100644
--- a/content/public/common/content_features.h
+++ b/content/public/common/content_features.h
@@ -17,6 +17,7 @@ namespace features {
 // All features in alphabetical order. The features should be documented
 // alongside the definition of their values in the .cc file.
 CONTENT_EXPORT extern const base::Feature kBrotliEncoding;
+CONTENT_EXPORT extern const base::Feature kCanvas2DImageChromium;
 CONTENT_EXPORT extern const base::Feature kCredentialManagementAPI;
 CONTENT_EXPORT extern const base::Feature kDefaultEnableGpuRasterization;
 CONTENT_EXPORT extern const base::Feature kDoNotUnlockSharedBuffer;
@@ -36,6 +37,7 @@ CONTENT_EXPORT extern const base::Feature kScrollAnchoring;
 CONTENT_EXPORT extern const base::Feature kStaleWhileRevalidate;
 CONTENT_EXPORT extern const base::Feature kTokenBinding;
 CONTENT_EXPORT extern const base::Feature kWeakMemoryCache;
+CONTENT_EXPORT extern const base::Feature kWebGLImageChromium;
 CONTENT_EXPORT extern const base::Feature kWebRtcEcdsaDefault;
 CONTENT_EXPORT extern const base::Feature kWebUsb;