Replace ASSERT*() with DCHECK*() in core/fetch/ and core/loader/

third_party/WebKit/Source/core/loader/NavigationScheduler.h

Index: third_party/WebKit/Source/core/loader/NavigationScheduler.h
diff --git a/third_party/WebKit/Source/core/loader/NavigationScheduler.h b/third_party/WebKit/Source/core/loader/NavigationScheduler.h
index 280b1b16b8c64d66a3d50d1924c02d170a579850..21469c74036fe0a9fcc30d703b0931b547a5313e 100644
--- a/third_party/WebKit/Source/core/loader/NavigationScheduler.h
+++ b/third_party/WebKit/Source/core/loader/NavigationScheduler.h
@@ -100,7 +100,7 @@ public:
     }
     ~NavigationDisablerForUnload()
     {
-        ASSERT(s_navigationDisableCount);
+        DCHECK(s_navigationDisableCount);
         s_navigationDisableCount--;
     }
     static bool isNavigationAllowed() { return !s_navigationDisableCount; }