Use LOG() or LOG_IF() instead of IMMEDIATE_CRASH

third_party/WebKit/Source/platform/graphics/GraphicsLayer.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 369 matching lines @@
         OffsetFromLayoutObject() +
         IntSize(contents_rect_.Location().X(), contents_rect_.Location().Y()));
   }
 }
 
 static HashSet<int>* g_registered_layer_set;
 
 void GraphicsLayer::RegisterContentsLayer(WebLayer* layer) {
   if (!g_registered_layer_set)
     g_registered_layer_set = new HashSet<int>;
-  if (g_registered_layer_set->Contains(layer->Id()))
-    IMMEDIATE_CRASH();
+  CHECK(!g_registered_layer_set->Contains(layer->Id()));
   g_registered_layer_set->insert(layer->Id());
 }
 
 void GraphicsLayer::UnregisterContentsLayer(WebLayer* layer) {
   DCHECK(g_registered_layer_set);
-  if (!g_registered_layer_set->Contains(layer->Id()))
-    IMMEDIATE_CRASH();
+  CHECK(g_registered_layer_set->Contains(layer->Id()));
   g_registered_layer_set->erase(layer->Id());
 }
 
 void GraphicsLayer::SetContentsTo(WebLayer* layer) {
   bool children_changed = false;
   if (layer) {
     DCHECK(g_registered_layer_set);
-    if (!g_registered_layer_set->Contains(layer->Id()))
-      IMMEDIATE_CRASH();
+    CHECK(g_registered_layer_set->Contains(layer->Id()));
     if (contents_layer_id_ != layer->Id()) {
       SetupContentsLayer(layer);
       children_changed = true;
     }
     UpdateContentsRect();
   } else {
     if (contents_layer_) {
       children_changed = true;
 
       // The old contents layer will be removed via updateChildList.
@@ skipping 877 matching lines @@
 void showGraphicsLayerTree(const blink::GraphicsLayer* layer) {
   if (!layer) {
     LOG(INFO) << "Cannot showGraphicsLayerTree for (nil).";
     return;
   }
 
   String output = layer->LayerTreeAsText(blink::kLayerTreeIncludesDebugInfo);
   LOG(INFO) << output.Utf8().data();
 }
 #endif