DevTools: Support breakpoints on canvas context creation

third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
index e41d489edeb56990f82806cd01077852fbf824eb..eba91ca79608f05aca6d5e730789e2b46d794800 100644
--- a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
@@ -27,6 +27,9 @@
 
 #include "core/html/HTMLCanvasElement.h"
 
+#include <math.h>
+#include <v8.h>
+#include <memory>
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptController.h"
@@ -53,6 +56,7 @@
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/html/canvas/CanvasRenderingContextFactory.h"
 #include "core/imagebitmap/ImageBitmapOptions.h"
+#include "core/inspector/InspectorInstrumentation.h"
 #include "core/layout/HitTestCanvasResult.h"
 #include "core/layout/LayoutHTMLCanvas.h"
 #include "core/layout/api/LayoutViewItem.h"
@@ -77,9 +81,6 @@
 #include "public/platform/WebTraceLocation.h"
 #include "wtf/CheckedNumeric.h"
 #include "wtf/PtrUtil.h"
-#include <math.h>
-#include <memory>
-#include <v8.h>
 
 namespace blink {
 
@@ -271,6 +272,8 @@ CanvasRenderingContext* HTMLCanvasElement::getCanvasRenderingContext(
   if (!m_context)
     return nullptr;
 
+  InspectorInstrumentation::didCreateCanvasContext(&document());

[Justin Novosad, 2017/02/09 20:23:03]

You need to do the same thing in OffscreenCanvas::getCanvasRenderingContext

+
   if (m_context->is3d()) {
     updateExternallyAllocatedMemory();
   }