Replace ASSERT()s with DCHECK*() in core/html/imports/.

third_party/WebKit/Source/core/html/imports/LinkImport.cpp

Index: third_party/WebKit/Source/core/html/imports/LinkImport.cpp
diff --git a/third_party/WebKit/Source/core/html/imports/LinkImport.cpp b/third_party/WebKit/Source/core/html/imports/LinkImport.cpp
index 4d2b4c11e5897086b183962cb52a663b38ff4c37..631af061a73bd750ab8443427501713529f7a900 100644
--- a/third_party/WebKit/Source/core/html/imports/LinkImport.cpp
+++ b/third_party/WebKit/Source/core/html/imports/LinkImport.cpp
@@ -75,7 +75,7 @@ void LinkImport::process()
     if (!m_owner->document().importsController()) {
         // The document should be the master.
         Document& master = m_owner->document();
-        ASSERT(master.frame());
+        DCHECK(master.frame());
         master.setImportsController(HTMLImportsController::create(master));
     }
 
@@ -104,7 +104,7 @@ void LinkImport::didFinish()
 
 void LinkImport::importChildWasDisposed(HTMLImportChild* child)
 {
-    ASSERT(m_child == child);
+    DCHECK_EQ(m_child, child);
     m_child = nullptr;
     m_owner = nullptr;
 }