DevTools: Implement undo, redo operations for the DOMStorage views.

LayoutTests/inspector/storage-panel-dom-storage-undo-redo-expected.txt

Index: LayoutTests/inspector/storage-panel-dom-storage-undo-redo-expected.txt
diff --git a/LayoutTests/inspector/storage-panel-dom-storage-undo-redo-expected.txt b/LayoutTests/inspector/storage-panel-dom-storage-undo-redo-expected.txt
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index 0000000000000000000000000000000000000000..86a0690daae60411355ed10284a11ad5c3736592
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+This test checks the undo/redo operations are performed correctly on the DOM storage views
+
+
+Running: initialize
+Initialized localStorage and sessionStorage by clearing entries.
+
+Running: undoLocalStorageWithEmptyStack
+LocalStorage contents:[]
+
+Running: redoLocalStorageWithEmptyStack
+LocalStorage contents:[]
+
+Running: localStorageUndoInterlacedWithAddition
+LocalStorage contents:[a1=b1]
+LocalStorage contents:[a1=b1,a3=b3]
+LocalStorage contents:[a1=b1]
+
+Running: addLocalStorageEntries
+LocalStorage contents:[a1=b1,a2=b2]
+
+Running: undoLocalStorageLastAddition
+LocalStorage contents:[a1=b1]
+
+Running: undoSessionStorageWithEmptyStack
+SessionStorage contents:[]
+
+Running: redoSessionStorageWithEmptyStack
+SessionStorage contents:[]
+
+Running: undoLocalStorageBeyondBounds
+The entry a1=b1 is removed and any attempt to undo beyond it shouldn't cause any failure!
+LocalStorage contents:[]
+
+Running: addSessionStorageEntries
+SessionStorage contents:[p1=q1,p2=q2,p3=q3,p4=q4]
+
+Running: redoLocalStorageBeyondBounds
+The entry a1=b1 and a2=b2 is added back and any attempt to redo beyond it shouldn't cause any failure!
+LocalStorage contents:[a1=b1,a2=b2]
+
+Running: undoSessionStorageLastAddition
+SessionStorage contents:[p1=q1,p2=q2,p3=q3]
+
+Running: modifyLocalStorageValues
+LocalStorage contents:[a1=x1,a2=x2]
+
+Running: undoLocalStorageModifications
+LocalStorage contents:[a1=b1,a2=b2]
+
+Running: redoSessionStorageLastAddition
+SessionStorage contents:[p1=q1,p2=q2,p3=q3,p4=q4]
+
+Running: redoLocalStorageModifications
+LocalStorage contents:[a1=x1,a2=x2]
+
+Running: modifySessionStorageEntriesKey
+SessionStorage contents:[m1=q1,m2=q2,m3=q3,m4=q4]
+
+Running: undoLocalStorageModifications
+LocalStorage contents:[a1=b1,a2=b2]
+
+Running: undoSessionStorageKeyModifications
+SessionStorage contents:[p1=q1,p2=q2,p3=q3,p4=q4]
+
+Running: validateMaxUndoRedoStackDepth
+Undo/redo stack depth limit is 20
+Performing 40 actions
+LocalStorage contents:[a1=b1,a2=b2,x10=y10,x11=y11,x12=y12,x13=y13,x14=y14,x15=y15,x16=y16,x17=y17,x18=y18,x19=y19,x1=y1,x20=y20,x2=y2,x3=y3,x4=y4,x5=y5,x6=y6,x7=y7,x8=y8,x9=y9]
+Performing undo operation three times the depth i.e. 60 times but only last 20 operations are undone
+LocalStorage contents:[a1=b1,a2=b2,x10=y10,x1=y1,x2=y2,x3=y3,x4=y4,x5=y5,x6=y6,x7=y7,x8=y8,x9=y9]
+
+Running: clearDOMStorageAndFinish
+Finished DOMStorage undo/redo tests and cleared localStorage and sessionStorage entries.
+