[Android] Fix GinJavaBridgeMessageFilter registration issue in Java Bridge.

content/browser/android/java/gin_java_bridge_message_filter.cc

Index: content/browser/android/java/gin_java_bridge_message_filter.cc
diff --git a/content/browser/android/java/gin_java_bridge_message_filter.cc b/content/browser/android/java/gin_java_bridge_message_filter.cc
index f348f9f0033d04f350a47eac704bfc6616720e5d..8aab967031edb9426d8e5beb459feff0351517e4 100644
--- a/content/browser/android/java/gin_java_bridge_message_filter.cc
+++ b/content/browser/android/java/gin_java_bridge_message_filter.cc
@@ -168,4 +168,12 @@ void GinJavaBridgeMessageFilter::OnObjectWrapperDeleted(
     host->OnObjectWrapperDeleted(current_routing_id_, object_id);
 }
 
+void GinJavaBridgeMessageFilter::RemoveUserData(
+    const GinJavaBridgeDispatcherHost* host) {
+  DCHECK(host);

[mnaganov (inactive), 2015/12/29 16:55:28]

DCHECK is not needed here, filter's only client is GinJavaBridgeDispatcherHost,
and we trust it.

[Pritam Nikam, 2015/12/30 12:05:36]

Done.

+  RenderProcessHost* rph = host->web_contents()->GetRenderProcessHost();
+  DCHECK(rph);

[mnaganov (inactive), 2015/12/29 16:55:28]

This DCHECK is also not needed because would `rph` happen to be nullptr, it will
be obvious from a crash dump when we try to access it on the next line.

[Pritam Nikam, 2015/12/30 12:05:36]

Done.

+  rph->RemoveUserData(kGinJavaBridgeMessageFilterKey);
+}
+
 }  // namespace content