DevTools: Support breakpoints on canvas context creation

third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.cpp
index afdd56be051ffd73acec5121a38e97b126721eed..05e4a4372df607d5c3f9f79fb81c7921da75a5ff 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorDOMDebuggerAgent.cpp
@@ -63,6 +63,7 @@ static const char webglErrorFiredEventName[] = "webglErrorFired";
 static const char webglWarningFiredEventName[] = "webglWarningFired";
 static const char webglErrorNameProperty[] = "webglErrorName";
 static const char scriptBlockedByCSPEventName[] = "scriptBlockedByCSP";
+static const char canvasContextCreatedEventName[] = "canvasContextCreated";
 
 namespace DOMDebuggerAgentState {
 static const char eventListenerBreakpoints[] = "eventListenerBreakpoints";
@@ -774,6 +775,11 @@ void InspectorDOMDebuggerAgent::willSendXMLHttpOrFetchNetworkRequest(
       toV8InspectorStringView(json));
 }
 
+void InspectorDOMDebuggerAgent::didCreateCanvasContext() {
+  pauseOnNativeEventIfNeeded(
+      preparePauseOnNativeEventData(canvasContextCreatedEventName, 0), true);
+}
+
 void InspectorDOMDebuggerAgent::didAddBreakpoint() {
   if (m_state->booleanProperty(DOMDebuggerAgentState::enabled, false))
     return;