didBeginFrame 337 Source/core/inspector/InspectorCanvasAgent.cpp void InspectorCanvasAgent::didBeginFrame() didBeginFrame 443 Source/core/inspector/InspectorController.cpp void InspectorController::didBeginFrame(int frameId) didBeginFrame 451 Source/core/inspector/InspectorTimelineAgent.cpp void InspectorTimelineAgent::didBeginFrame(int frameId) didBeginFrame 257 Source/web/WebDevToolsAgentImpl.cpp void WebDevToolsAgentImpl::didBeginFrame(int frameId)