Here is a list of all variables with links to the classes they belong to:

- u -

• ui_config : flutter::ThreadHost::ThreadHostConfig
• ui_task_runner : FlutterCustomTaskRunners
• ui_task_runner_ : flutter::PlatformMessageResponseDart
• ui_thread : flutter::ThreadHost
• ui_thread_policy : _FlDartProject, FlutterDesktopEngineProperties
• ui_time : flutter::PaintContext, flutter::PrerollContext
• underline_style : ui::AXNodeTextStyles
• underlying_type : impeller::compiler::StructMember
• unhandled_exception_callback : flutter::Settings
• uniforms : impeller::compiler::RuntimeStageData::Shader, impeller::interop::SamplersAndUniforms
• unique : Catalog::Entry
• unique_cell_ids : ui::AXTableInfo
• unref_queue : flutter::UIDartState::Context
• UnregisterExternalTexture : FlutterEngineProcTable
• unscaled_ascent : txt::LineMetrics
• unused : impeller::DescriptorCache
• update_semantics_callback : flutter::PlatformViewEmbedder::PlatformDispatchTable, FlutterProjectArgs
• update_semantics_callback2 : FlutterProjectArgs
• update_semantics_callback2_ : flutter::testing::EmbedderTestContext
• update_semantics_callback_ : flutter::testing::EmbedderTestContext
• update_semantics_cb_id : _FlView
• update_semantics_custom_action_callback : FlutterProjectArgs
• update_semantics_custom_action_callback_ : flutter::testing::EmbedderTestContext
• update_semantics_node_callback : FlutterProjectArgs
• update_semantics_node_callback_ : flutter::testing::EmbedderTestContext
• UpdateAccessibilityFeatures : FlutterEngineProcTable
• UpdateLocales : FlutterEngineProcTable
• updates : flutter::testing::MockRuntimeDelegate
• UpdateSemanticsEnabled : FlutterEngineProcTable
• upper_left_corner_radius : FlutterRoundedRect
• upper_right_corner_radius : FlutterRoundedRect
• url : ui::AXTreeData
• usage : impeller::android::HardwareBufferDescriptor, impeller::FRCFormatDescriptor, impeller::TextureDescriptor
• use_angle : impeller::PlaygroundSwitches
• use_asset_fonts : flutter::Settings
• use_half_textures : impeller::compiler::SourceOptions, impeller::compiler::Switches
• use_swiftshader : impeller::PlaygroundSwitches
• use_test_fonts : flutter::Settings
• used : impeller::DescriptorCache
• user_data : _FlKeyboardChannel, _FlKeyEmbedderCallRecord, _FlMouseCursorChannel, _FlPlatformChannel, _FlTextInputChannel, _FlutterPlatformMessageResponseHandle, _FlWindowingChannel, FlutterAddViewInfo, FlutterAddViewResult, FlutterBackingStore, FlutterCompositor, FlutterDesktopGpuSurfaceTextureConfig, FlutterDesktopPixelBufferTextureConfig, FlutterEngineDartBuffer, FlutterMetalTexture, FlutterOpenGLFramebuffer, FlutterOpenGLSurface, FlutterOpenGLTexture, FlutterPlatformViewCreationParameters, FlutterPlatformViewTypeEntry, FlutterPresentViewInfo, FlutterRemoveViewInfo, FlutterRemoveViewResult, FlutterSoftwareBackingStore2, FlutterSoftwareBackingStore, FlutterTaskRunnerDescription, FlutterVulkanBackingStore, Handler, ImpellerContextVulkanSettings, InvokeMethodData, MockChannel, MockEventChannel, MockMessageChannel, MockMethodChannel, SendMessageData
• user_settings_data : flutter::PlatformData
• uuid : impeller::PipelineCacheHeaderVK
• uv_offset : impeller::KernelSample
• uv_transformation : impeller::glvk::Trampoline::GLTextureInfo