DevTools: Make StepInto work across script boundaries and Blink process tasks.

LayoutTests/inspector/sources/debugger/debugger-step-into-document-write-expected.txt

Index: LayoutTests/inspector/sources/debugger/debugger-step-into-document-write-expected.txt
diff --git a/LayoutTests/inspector/sources/debugger/debugger-step-into-document-write-expected.txt b/LayoutTests/inspector/sources/debugger/debugger-step-into-document-write-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..efaa44132974d5f6335a758f1b27de18e983c00f
--- /dev/null
+++ b/LayoutTests/inspector/sources/debugger/debugger-step-into-document-write-expected.txt
@@ -0,0 +1,53 @@
+Tests that debugger StepInto will step into inlined scripts created by document.write().
+
+Script source was shown.
+Call stack:
+    0)  (debugger-step-into-document-write.html:4)
+
+Executing StepInto...
+Call stack:
+    0)  (:1)
+    1)  (debugger-step-into-document-write.html:4)
+
+Executing StepInto...
+Call stack:
+    0)  (:5)
+    1)  (debugger-step-into-document-write.html:4)
+
+Executing StepInto...
+Call stack:
+    0) f1 (:3)
+    1)  (:5)
+    2)  (debugger-step-into-document-write.html:4)
+
+Executing StepInto...
+Call stack:
+    0) f1 (:4)
+    1)  (:5)
+    2)  (debugger-step-into-document-write.html:4)
+
+Executing StepInto...
+Call stack:
+    0)  (:6)
+    1)  (debugger-step-into-document-write.html:4)
+
+Executing StepInto...
+Call stack:
+    0)  (:6)
+    1)  (debugger-step-into-document-write.html:4)
+
+Executing StepInto...
+Call stack:
+    0)  (debugger-step-into-document-write.html:1)
+
+Executing StepInto...
+Call stack:
+    0)  (debugger-step-into-document-write.html:4)
+
+Executing StepInto...
+Call stack:
+    0)  (debugger-step-into-document-write.html:7)
+
+Executing Resume...
+Page reloaded.
+