Fix typo in comment in RenderFrameObserver

Bug: None
Change-Id: I6b5211e7cdc4c82bb0982311daef940ff6e71e13
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2362492Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801270}

AUTHORS

@@ -698,6 +698,7 @@ Milutin Smiljanic <msmiljanic.gm@gmail.com>
 Minchul Kang <tegongkang@gmail.com>
 Minggang Wang <minggang.wang@intel.com>
 Mingmin Xie <melvinxie@gmail.com>
+Minjeong Kim <deoxyribonucleicacid150@gmail.com>
 Minjeong Lee <apenr1234@gmail.com>
 Minseok Koo <kei98301@gmail.com>
 Minsoo Max Koo <msu.koo@samsung.com>

content/public/renderer/render_frame_observer.h

@@ -56,7 +56,7 @@ class CONTENT_EXPORT RenderFrameObserver : public IPC::Listener,
                                            public IPC::Sender {
  public:
   // A subclass can use this to delete itself. If it does not, the subclass must
-  // always null-check each call to render_frame() becase the RenderFrame can
+  // always null-check each call to render_frame() because the RenderFrame can
   // go away at any time.
   virtual void OnDestruct() = 0;