[DevTools] Never stop in InjectedScriptSource

third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp

Index: third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp
diff --git a/third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp b/third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp
index 2b232efc2e714be4c5e32cd5d5f063f3ff3f2cfc..806a97cdb1091025db4fde513822d1d7d297837d 100644
--- a/third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp
+++ b/third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp
@@ -873,9 +873,6 @@ void V8DebuggerAgentImpl::willExecuteScript(int scriptId)
     // Fast return.
     if (m_scheduledDebuggerStep != StepInto)
         return;
-    // Skip unknown scripts (e.g. InjectedScript).
-    if (m_scripts.find(String16::fromInteger(scriptId)) == m_scripts.end())
-        return;
     schedulePauseOnNextStatementIfSteppingInto();
 }
 
@@ -1054,6 +1051,13 @@ V8DebuggerAgentImpl::SkipPauseRequest V8DebuggerAgentImpl::didPause(v8::Local<v8
     JavaScriptCallFrames callFrames = debugger().currentCallFrames(1);
     JavaScriptCallFrame* topCallFrame = !callFrames.empty() ? callFrames.begin()->get() : nullptr;
 
+    // Skip pause in internal scripts (e.g. InjectedScriptSource.js).
+    if (topCallFrame) {
+        ScriptsMap::iterator it = m_scripts.find(String16::fromInteger(topCallFrame->sourceID()));
+        if (it != m_scripts.end() && it->second->isInternalScript())
+            return RequestStepFrame;
+    }
+
     V8DebuggerAgentImpl::SkipPauseRequest result;
     if (m_skipAllPauses)
         result = RequestContinue;