Track where WebContents are created in order to better understand issue.

android_webview/lib/aw_browser_dependency_factory_impl.cc

Index: android_webview/lib/aw_browser_dependency_factory_impl.cc
diff --git a/android_webview/lib/aw_browser_dependency_factory_impl.cc b/android_webview/lib/aw_browser_dependency_factory_impl.cc
index b054881cbe45fb182a0e10a339edbab39f96cb5f..7c4abb3443811b47acecdd30d84dce45d9e340f9 100644
--- a/android_webview/lib/aw_browser_dependency_factory_impl.cc
+++ b/android_webview/lib/aw_browser_dependency_factory_impl.cc
@@ -9,6 +9,7 @@
 #include "base/lazy_instance.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_source.h"
 #include "content/public/common/content_client.h"
 
 using content::BrowserContext;
@@ -36,8 +37,10 @@ content::BrowserContext* AwBrowserDependencyFactoryImpl::GetBrowserContext() {
 }
 
 WebContents* AwBrowserDependencyFactoryImpl::CreateWebContents() {
-  return content::WebContents::Create(
+  content::WebContents* web_contents = content::WebContents::Create(
       content::WebContents::CreateParams(GetBrowserContext()));
+  WebContentsSource::CreateForWebContentsAndLocation(web_contents, FROM_HERE);

[Mike Wittman, 2015/11/11 17:15:28]

Web contents modal dialogs aren't supported on Android, so we don't need this
one. (+ three other cases)

[hcarmona, 2015/11/11 19:57:57]

Done.

+  return web_contents;
 }
 
 }  // namespace android_webview