Fix minor typo in EditorCommand

Minor typo fix in EditorCommand.cpp
Replaced ModifySelectionyWithPageGranularity with
ModifySelectionWithPageGranularity.

Bug: 
Change-Id: I5f1f60c7788b0e5b4a483d01434b640cfe1d67b8
Reviewed-on: https://chromium-review.googlesource.com/811024
Commit-Queue: yosin (OOO Dec 11 to Jan 8) <yosin@chromium.org>
Reviewed-by: yosin (OOO Dec 11 to Jan 8) <yosin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#522365}

third_party/WebKit/Source/core/editing/commands/EditorCommand.cpp

@@ -1242,7 +1242,7 @@ static bool ExecuteMoveLeftAndModifySelection(LocalFrame& frame,
 }
 
 // Returns true if selection is modified.
-bool ModifySelectionyWithPageGranularity(
+bool ModifySelectionWithPageGranularity(
     LocalFrame& frame,
     SelectionModifyAlteration alter,
     unsigned vertical_distance,
@@ -1274,7 +1274,7 @@ static bool ExecuteMovePageDown(LocalFrame& frame,
   unsigned distance = VerticalScrollDistance(frame);
   if (!distance)
     return false;
-  return ModifySelectionyWithPageGranularity(
+  return ModifySelectionWithPageGranularity(
       frame, SelectionModifyAlteration::kMove, distance,
       SelectionModifyVerticalDirection::kDown);
 }
@@ -1286,7 +1286,7 @@ static bool ExecuteMovePageDownAndModifySelection(LocalFrame& frame,
   unsigned distance = VerticalScrollDistance(frame);
   if (!distance)
     return false;
-  return ModifySelectionyWithPageGranularity(
+  return ModifySelectionWithPageGranularity(
       frame, SelectionModifyAlteration::kExtend, distance,
       SelectionModifyVerticalDirection::kDown);
 }
@@ -1298,7 +1298,7 @@ static bool ExecuteMovePageUp(LocalFrame& frame,
   unsigned distance = VerticalScrollDistance(frame);
   if (!distance)
     return false;
-  return ModifySelectionyWithPageGranularity(
+  return ModifySelectionWithPageGranularity(
       frame, SelectionModifyAlteration::kMove, distance,
       SelectionModifyVerticalDirection::kUp);
 }
@@ -1310,7 +1310,7 @@ static bool ExecuteMovePageUpAndModifySelection(LocalFrame& frame,
   unsigned distance = VerticalScrollDistance(frame);
   if (!distance)
     return false;
-  return ModifySelectionyWithPageGranularity(
+  return ModifySelectionWithPageGranularity(
       frame, SelectionModifyAlteration::kExtend, distance,
       SelectionModifyVerticalDirection::kUp);
 }