Ensure the new navigation classifier works in the real world.

content/browser/frame_host/navigation_controller_impl.cc

Index: content/browser/frame_host/navigation_controller_impl.cc
diff --git a/content/browser/frame_host/navigation_controller_impl.cc b/content/browser/frame_host/navigation_controller_impl.cc
index 5d4dee8bb4f528239f5aa090c019182e197bf25f..3c25b2e2f813106986a9c6d68b40ddd7ed357bbd 100644
--- a/content/browser/frame_host/navigation_controller_impl.cc
+++ b/content/browser/frame_host/navigation_controller_impl.cc
@@ -6,6 +6,7 @@
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/debug/crash_logging.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"  // Temporary
@@ -792,6 +793,11 @@ bool NavigationControllerImpl::RendererDidNavigate(
   // Do navigation-type specific actions. These will make and commit an entry.
   details->type = ClassifyNavigation(rfh, params);
   NavigationType new_type = ClassifyNavigationWithoutPageID(rfh, params);
+  if (details->type == NAVIGATION_TYPE_NAV_IGNORE &&
+      new_type == NAVIGATION_TYPE_NAV_IGNORE) {
+    base::debug::SetCrashKeyValue("369661-doubleignore",
+                                  rfh->CommitCountString());
+  }
   bool ignore_mismatch = false;
   // There are disagreements on some Android bots over SAME_PAGE between the two
   // classifiers so ignore disagreements if that's the case.
@@ -816,7 +822,22 @@ bool NavigationControllerImpl::RendererDidNavigate(
     ignore_mismatch = true;
   }
   if (!ignore_mismatch) {
-    DCHECK_EQ(details->type, new_type);
+    base::debug::SetCrashKeyValue("369661-oldtype",
+                                  base::IntToString(details->type));
+    base::debug::SetCrashKeyValue("369661-newtype",
+                                  base::IntToString(new_type));
+    base::debug::SetCrashKeyValue("369661-navurl", params.url.spec());
+    base::debug::SetCrashKeyValue("369661-naventryid",
+                                  base::IntToString(params.nav_entry_id));
+    base::debug::SetCrashKeyValue("369661-didcreatenew",
+                                  params.did_create_new_entry ? "yes" : "no");
+    base::debug::SetCrashKeyValue("369661-pageid",
+                                  base::IntToString(params.page_id));
+    base::debug::SetCrashKeyValue(
+        "369661-maxpageid",
+        base::IntToString(delegate_->GetMaxPageIDForSiteInstance(
+            rfh->GetSiteInstance())));
+    CHECK_EQ(details->type, new_type);
   }
 
   // is_in_page must be computed before the entry gets committed.
@@ -936,6 +957,9 @@ NavigationType NavigationControllerImpl::ClassifyNavigation(
     //   list.
     //
     // In these cases, there's nothing we can do with them, so ignore.
+    base::debug::SetCrashKeyValue("369661-oldignore",
+                                  rfh->CommitCountString() +
+                                  " no page id");
     return NAVIGATION_TYPE_NAV_IGNORE;
   }
 
@@ -952,8 +976,12 @@ NavigationType NavigationControllerImpl::ClassifyNavigation(
     // navigated on a popup navigated to about:blank (the iframe would be
     // written into the popup by script on the main page). For these cases,
     // there isn't any navigation stuff we can do, so just ignore it.
-    if (!GetLastCommittedEntry())
+    if (!GetLastCommittedEntry()) {
+      base::debug::SetCrashKeyValue("369661-oldignore",
+                                    rfh->CommitCountString() +
+                                    " new subframe no last committed");
       return NAVIGATION_TYPE_NAV_IGNORE;
+    }
 
     // Valid subframe navigation.
     return NAVIGATION_TYPE_NEW_SUBFRAME;
@@ -1004,6 +1032,9 @@ NavigationType NavigationControllerImpl::ClassifyNavigation(
     }
     GURL url(temp);
     rfh->render_view_host()->Send(new ViewMsg_TempCrashWithData(url));
+    base::debug::SetCrashKeyValue("369661-oldignore",
+                                  rfh->CommitCountString() +
+                                  " renderer smoking crack");
     return NAVIGATION_TYPE_NAV_IGNORE;
   }
   NavigationEntryImpl* existing_entry = entries_[existing_entry_index].get();
@@ -1076,8 +1107,12 @@ NavigationType NavigationControllerImpl::ClassifyNavigationWithoutPageID(
     // navigated on a popup navigated to about:blank (the iframe would be
     // written into the popup by script on the main page). For these cases,
     // there isn't any navigation stuff we can do, so just ignore it.
-    if (!GetLastCommittedEntry())
+    if (!GetLastCommittedEntry()) {
+      base::debug::SetCrashKeyValue("369661-newignore",
+                                    rfh->CommitCountString() +
+                                    " new subframe no last committed");
       return NAVIGATION_TYPE_NAV_IGNORE;
+    }
 
     // Valid subframe navigation.
     return NAVIGATION_TYPE_NEW_SUBFRAME;
@@ -1094,6 +1129,9 @@ NavigationType NavigationControllerImpl::ClassifyNavigationWithoutPageID(
     } else {
       // We ignore subframes created in non-committed pages; we'd appreciate if
       // people stopped doing that.
+      base::debug::SetCrashKeyValue("369661-newignore",
+                                    rfh->CommitCountString() +
+                                    " auto subframe no last committed");
       return NAVIGATION_TYPE_NAV_IGNORE;
     }
   }
@@ -1106,8 +1144,12 @@ NavigationType NavigationControllerImpl::ClassifyNavigationWithoutPageID(
     // scribble onto an uncommitted page. Again, there isn't any navigation
     // stuff that we can do, so ignore it here as well.
     NavigationEntry* last_committed = GetLastCommittedEntry();
-    if (!last_committed)
+    if (!last_committed) {
+      base::debug::SetCrashKeyValue("369661-newignore",
+                                    rfh->CommitCountString() +
+                                    " renderer-initiated no last committed");
       return NAVIGATION_TYPE_NAV_IGNORE;
+    }
 
     if (IsURLInPageNavigation(params.url, params.was_within_same_page, rfh)) {
       // This is history.replaceState(), which is renderer-initiated yet within
@@ -1155,6 +1197,9 @@ NavigationType NavigationControllerImpl::ClassifyNavigationWithoutPageID(
     // to such entries). It could also mean that the renderer is smoking crack.
     // TODO(avi): Crash the renderer like we do in the old ClassifyNavigation?
     NOTREACHED() << "Could not find nav entry with id " << params.nav_entry_id;
+    base::debug::SetCrashKeyValue("369661-newignore",
+                                  rfh->CommitCountString() +
+                                  " renderer smoking crack");
     return NAVIGATION_TYPE_NAV_IGNORE;
   }