Add ppapi interface for setting crash data

ppapi/proxy/ppapi_proxy_test.cc

Index: ppapi/proxy/ppapi_proxy_test.cc
diff --git a/ppapi/proxy/ppapi_proxy_test.cc b/ppapi/proxy/ppapi_proxy_test.cc
index deeb8f48be3ad6b8f8ad24bb12fd2bdfb35986bd..1e68afc0820b5693f03e138553e172bce22ca79a 100644
--- a/ppapi/proxy/ppapi_proxy_test.cc
+++ b/ppapi/proxy/ppapi_proxy_test.cc
@@ -237,6 +237,10 @@ void PluginProxyTestHarness::PluginDelegateMock::PreCacheFont(
     const void* logfontw) {
 }
 
+void PluginProxyTestHarness::PluginDelegateMock::SetActiveURL(
+    const std::string& url) {
+}
+
 // PluginProxyTest -------------------------------------------------------------
 
 PluginProxyTest::PluginProxyTest() {