DevTools: do not rely upon reported context having accessible injected script.

third_party/WebKit/Source/core/inspector/v8/V8RuntimeAgentImpl.cpp

Index: third_party/WebKit/Source/core/inspector/v8/V8RuntimeAgentImpl.cpp
diff --git a/third_party/WebKit/Source/core/inspector/v8/V8RuntimeAgentImpl.cpp b/third_party/WebKit/Source/core/inspector/v8/V8RuntimeAgentImpl.cpp
index 44c20af6cac7aaead2f95dfbee486825c7198c5d..aceecc241d5503944ab7ed0a63606f743e6c4e10 100644
--- a/third_party/WebKit/Source/core/inspector/v8/V8RuntimeAgentImpl.cpp
+++ b/third_party/WebKit/Source/core/inspector/v8/V8RuntimeAgentImpl.cpp
@@ -212,6 +212,8 @@ void V8RuntimeAgentImpl::reportExecutionContextCreated(ScriptState* scriptState,
     if (!m_enabled)
         return;
     InjectedScript* injectedScript = injectedScriptManager()->injectedScriptFor(scriptState);
+    if (!injectedScript)
+        return;
     RefPtr<ExecutionContextDescription> description = ExecutionContextDescription::create()
         .setId(injectedScript->contextId())
         .setName(humanReadableName)