PlzNavigate: Invoke didFailProvisionalLoad() in the renderer when a navigation request is cancelled…

third_party/WebKit/Source/core/loader/FrameLoader.cpp

Index: third_party/WebKit/Source/core/loader/FrameLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/FrameLoader.cpp b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
index f773065636dfe57d0ae6fe63423fc7970a3b896d..f87be78eb35f2333e12358d3424fe7d03e74233f 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
@@ -1231,6 +1231,11 @@ void FrameLoader::stopAllLoaders() {
 
   m_inStopAllLoaders = true;
 
+  if (m_isNavigationHandledByClient && client()) {

[Nate Chapin, 2017/02/09 00:10:07]

I'm ~99% confident client() should be guaranteed non-null at this point.

[ananta, 2017/02/09 00:22:46]

Thanks. Removed the null check

+    client()->dispatchDidFailProvisionalLoad(
+        ResourceError::cancelledError(String()), StandardCommit);
+  }
+
   m_isNavigationHandledByClient = false;
 
   for (Frame* child = m_frame->tree().firstChild(); child;