Remove DumpWithoutCrashing calls for empty PageState.

content/browser/frame_host/navigation_entry_impl.cc

Index: content/browser/frame_host/navigation_entry_impl.cc
diff --git a/content/browser/frame_host/navigation_entry_impl.cc b/content/browser/frame_host/navigation_entry_impl.cc
index 880d0a21ae843f87d6f31d1b9420e18059526fae..9d0d22c51d13b7fcefe9fd4efb26983ebdf868a8 100644
--- a/content/browser/frame_host/navigation_entry_impl.cc
+++ b/content/browser/frame_host/navigation_entry_impl.cc
@@ -9,7 +9,6 @@
 #include <queue>
 #include <utility>
 
-#include "base/debug/dump_without_crashing.h"
 #include "base/i18n/rtl.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
@@ -66,11 +65,7 @@ void RecursivelyGenerateFrameEntries(
   page_state.top = state;
   std::string data;
   EncodePageState(page_state, &data);
-  if (data.empty()) {
-    // Temporarily generate a minidump to diagnose https://crbug.com/568703.
-    base::debug::DumpWithoutCrashing();
-    NOTREACHED() << "Shouldn't generate an empty PageState.";
-  }
+  DCHECK(!data.empty()) << "Shouldn't generate an empty PageState.";
   node->frame_entry->SetPageState(PageState::CreateFromEncodedData(data));
 
   // Don't pass the file list to subframes, since that would result in multiple