Re-enable GPU-GPU copies of video textures to GL_RED

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
index a1a75aa6679f37655eb1e904e85f14a3f1ebc121..8d5f225046d7ef03b72f800c25b7dd3b8cab5184 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
@@ -4878,13 +4878,6 @@ bool WebGLRenderingContextBase::CanUseTexImageByGPU(GLenum format,
   if (type == GL_UNSIGNED_SHORT_5_5_5_1)
     return false;
 #endif
-  // TODO(kbr): bugs were observed when using CopyTextureCHROMIUM to
-  // copy hardware-accelerated video textures to red-channel textures.
-  // These bugs were seen on macOS but may indicate more general
-  // problems. Investigate the root cause of this and fix it.
-  // crbug.com/710673
-  if (format == GL_RED || format == GL_RED_INTEGER)
-    return false;
 
 #if defined(OS_ANDROID)
   // TODO(kbr): bugs were seen on Android devices with NVIDIA GPUs