Update comments referencing WebInputEvent.h to reflect file name change

Change-Id: I84983d2fe371ffbf0d6bdbbbf116de532fa741c7
Reviewed-on: https://chromium-review.googlesource.com/c/1340599
Commit-Queue: Charlie Andrews <charliea@chromium.org>
Reviewed-by: Mustaq Ahmed <mustaq@chromium.org>
Reviewed-by: Nate Chapin <japhet@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612431}

third_party/blink/public/platform/web_coalesced_input_event.h

@@ -15,7 +15,7 @@
 namespace blink {
 
 // This class represents a polymorphic WebInputEvent structure with its
-// coalesced events. The event could be any event defined in WebInputEvent.h,
+// coalesced events. The event could be any event defined in web_input_event.h,
 // including those that cannot be coalesced.
 class BLINK_PLATFORM_EXPORT WebCoalescedInputEvent {
  public:

third_party/blink/public/platform/web_gesture_event.h

@@ -11,7 +11,7 @@
 
 namespace blink {
 
-// See WebInputEvent.h for details why this pack is here.
+// See web_input_event.h for details why this pack is here.
 #pragma pack(push, 4)
 
 // WebGestureEvent ---------------------------------------------------------

third_party/blink/public/platform/web_keyboard_event.h

@@ -9,7 +9,7 @@
 
 namespace blink {
 
-// See WebInputEvent.h for details why this pack is here.
+// See web_input_event.h for details why this pack is here.
 #pragma pack(push, 4)
 
 // WebKeyboardEvent -----------------------------------------------------------

third_party/blink/public/platform/web_mouse_event.h

@@ -12,7 +12,7 @@ namespace blink {
 
 class WebGestureEvent;
 
-// See WebInputEvent.h for details why this pack is here.
+// See web_input_event.h for details why this pack is here.
 #pragma pack(push, 4)
 
 // WebMouseEvent --------------------------------------------------------------

third_party/blink/public/platform/web_mouse_wheel_event.h

@@ -9,7 +9,7 @@
 
 namespace blink {
 
-// See WebInputEvent.h for details why this pack is here.
+// See web_input_event.h for details why this pack is here.
 #pragma pack(push, 4)
 
 // WebMouseWheelEvent ---------------------------------------------------------

third_party/blink/public/platform/web_pointer_event.h

@@ -12,7 +12,7 @@
 
 namespace blink {
 
-// See WebInputEvent.h for details why this pack is here.
+// See web_input_event.h for details why this pack is here.
 #pragma pack(push, 4)
 
 // WebPointerEvent

third_party/blink/public/platform/web_touch_event.h

@@ -9,7 +9,7 @@
 
 namespace blink {
 
-// See WebInputEvent.h for details why this pack is here.
+// See web_input_event.h for details why this pack is here.
 #pragma pack(push, 4)
 
 // WebTouchEvent --------------------------------------------------------------