[DevTools] Never stop in InjectedScriptSource

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/v8_inspector/V8DebuggerAgentImpl.h"
 
 #include "platform/inspector_protocol/String16.h"
 #include "platform/inspector_protocol/Values.h"
 #include "platform/v8_inspector/InjectedScript.h"
 #include "platform/v8_inspector/InspectedContext.h"
@@ skipping 855 matching lines @@
 
     m_blackboxedPositions[scriptId] = positions;
 }
 
 void V8DebuggerAgentImpl::willExecuteScript(int scriptId)
 {
     changeJavaScriptRecursionLevel(+1);
     // 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();
 }
 
 void V8DebuggerAgentImpl::didExecuteScript()
 {
     changeJavaScriptRecursionLevel(-1);
 }
 
 void V8DebuggerAgentImpl::changeJavaScriptRecursionLevel(int step)
 {
@@ skipping 158 matching lines @@
         if (location)
             m_frontend.breakpointResolved(cookie.first, std::move(location));
     }
 }
 
 V8DebuggerAgentImpl::SkipPauseRequest V8DebuggerAgentImpl::didPause(v8::Local<v8::Context> context, v8::Local<v8::Value> exception, const std::vector<String16>& hitBreakpoints, bool isPromiseRejection)
 {
     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;
     else if (!hitBreakpoints.empty())
         result = RequestNoSkip; // Don't skip explicit breakpoints even if set in frameworks.
     else if (!exception.IsEmpty())
         result = shouldSkipExceptionPause(topCallFrame);
     else if (m_scheduledDebuggerStep != NoStep || m_javaScriptPauseScheduled || m_pausingOnNativeEvent)
         result = shouldSkipStepPause(topCallFrame);
     else
@@ skipping 113 matching lines @@
 {
     if (!enabled())
         return;
     m_scheduledDebuggerStep = NoStep;
     m_scripts.clear();
     m_blackboxedPositions.clear();
     m_breakpointIdToDebuggerBreakpointIds.clear();
 }
 
 } // namespace blink