Revert of [DevTools] Remove edited scripts from debugger agent, move knowledge to frontend.

LayoutTests/inspector/sources/debugger/network-uisourcecode-provider-expected.txt

Index: LayoutTests/inspector/sources/debugger/network-uisourcecode-provider-expected.txt
diff --git a/LayoutTests/inspector/sources/debugger/network-uisourcecode-provider-expected.txt b/LayoutTests/inspector/sources/debugger/network-uisourcecode-provider-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f8e697bcd9fc765154e8897e99aca266532b6903
--- /dev/null
+++ b/LayoutTests/inspector/sources/debugger/network-uisourcecode-provider-expected.txt
@@ -0,0 +1,38 @@
+Tests NetworkUISourceCodeProvider class.
+
+
+Running: testDocumentResource
+Creating resource.
+UISourceCode: http://fake.url/1
+UISourceCode is content script: false
+Highlighter type: text/html
+UISourceCode content: <document resource content>
+
+Running: testScriptResource
+Creating resource.
+UISourceCode: http://fake.url/2
+UISourceCode is content script: false
+Highlighter type: text/javascript
+UISourceCode content: <script resource content>
+
+Running: testVMScript
+Creating script.
+UISourceCode: http://fake.url/3
+UISourceCode is content script: false
+Highlighter type: text/javascript
+UISourceCode content: <script content>
+
+Running: testStylesheetResource
+Creating resource.
+UISourceCode: http://fake.url/4
+Highlighter type: text/css
+UISourceCode content: <stylesheet resource content>
+
+Running: testRemoveStyleSheetFromModelWithComplexURL
+Added uiSourceCode: http://example.com/foo.css
+Removed uiSourceCode: http://example.com/foo.css
+
+Running: testRemoveStyleSheetFromModelWithSimpleURL
+Added uiSourceCode: foo.css
+Removed uiSourceCode: foo.css
+