Trace where timers were scheduled in Blink

Source/core/html/canvas/WebGLRenderingContextBase.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 4126 matching lines @@
 
     ConsoleDisplayPreference display = (mode == RealLostContext) ? DisplayInConsole: DontDisplayInConsole;
     synthesizeGLError(GC3D_CONTEXT_LOST_WEBGL, "loseContext", "context lost", display);
 
     // Don't allow restoration unless the context lost event has both been
     // dispatched and its default behavior prevented.
     m_restoreAllowed = false;
 
     // Always defer the dispatch of the context lost event, to implement
     // the spec behavior of queueing a task.
-    m_dispatchContextLostEventTimer.startOneShot(0);
+    m_dispatchContextLostEventTimer.startOneShot(0, FROM_HERE);
 }
 
 void WebGLRenderingContextBase::forceRestoreContext()
 {
     if (!isContextLost()) {
         synthesizeGLError(GL_INVALID_OPERATION, "restoreContext", "context not lost");
         return;
     }
 
     if (!m_restoreAllowed) {
         if (m_contextLostMode == SyntheticLostContext)
             synthesizeGLError(GL_INVALID_OPERATION, "restoreContext", "context restoration not allowed");
         return;
     }
 
     if (!m_restoreTimer.isActive())
-        m_restoreTimer.startOneShot(0);
+        m_restoreTimer.startOneShot(0, FROM_HERE);
 }
 
 blink::WebLayer* WebGLRenderingContextBase::platformLayer() const
 {
     return m_drawingBuffer->platformLayer();
 }
 
 Extensions3DUtil* WebGLRenderingContextBase::extensionsUtil()
 {
     if (!m_extensionsUtil)
@@ skipping 1127 matching lines @@
         attribValue.value[ii] = v[ii];
 }
 
 void WebGLRenderingContextBase::dispatchContextLostEvent(Timer<WebGLRenderingContextBase>*)
 {
     RefPtr<WebGLContextEvent> event = WebGLContextEvent::create(EventTypeNames::webglcontextlost, false, true, "");
     canvas()->dispatchEvent(event);
     m_restoreAllowed = event->defaultPrevented();
     deactivateContext(this, m_contextLostMode != RealLostContext && m_restoreAllowed);
     if ((m_contextLostMode == RealLostContext || m_contextLostMode == AutoRecoverSyntheticLostContext) && m_restoreAllowed)
-        m_restoreTimer.startOneShot(0);
+        m_restoreTimer.startOneShot(0, FROM_HERE);
 }
 
 void WebGLRenderingContextBase::maybeRestoreContext(Timer<WebGLRenderingContextBase>*)
 {
     ASSERT(isContextLost());
 
     // The rendering context is not restored unless the default behavior of the
     // webglcontextlost event was prevented earlier.
     //
     // Because of the way m_restoreTimer is set up for real vs. synthetic lost
     // context events, we don't have to worry about this test short-circuiting
     // the retry loop for real context lost events.
     if (!m_restoreAllowed)
         return;
 
     LocalFrame* frame = canvas()->document().frame();
     if (!frame)
         return;
 
     Settings* settings = frame->settings();
 
     if (!frame->loader().client()->allowWebGL(settings && settings->webGLEnabled()))
         return;
 
     blink::WebGraphicsContext3D::Attributes attributes = m_requestedAttributes->attributes(canvas()->document().topDocument().url().string(), settings);
     OwnPtr<blink::WebGraphicsContext3D> context = adoptPtr(blink::Platform::current()->createOffscreenGraphicsContext3D(attributes));
     if (!context) {
         if (m_contextLostMode == RealLostContext) {
-            m_restoreTimer.startOneShot(secondsBetweenRestoreAttempts);
+            m_restoreTimer.startOneShot(secondsBetweenRestoreAttempts, FROM_HERE);
         } else {
             // This likely shouldn't happen but is the best way to report it to the WebGL app.
             synthesizeGLError(GL_INVALID_OPERATION, "", "error restoring context");
         }
         return;
     }
 
     RefPtr<WebGLRenderingContextEvictionManager> contextEvictionManager = adoptRef(new WebGLRenderingContextEvictionManager());
 
     // Construct a new drawing buffer with the new WebGraphicsContext3D.
@@ skipping 203 matching lines @@
         if (m_textureUnits[i].m_texture2DBinding
             || m_textureUnits[i].m_textureCubeMapBinding) {
             m_onePlusMaxNonDefaultTextureUnit = i + 1;
             return;
         }
     }
     m_onePlusMaxNonDefaultTextureUnit = 0;
 }
 
 } // namespace WebCore