An experimental fix for Issue 7707. To read crash dumps, it seems a rich-edit control crashes because it receives a WM_IME_CHAR message while it is processing a WM_IME_COMPOSITION message. Since a rich-edit control does not need WM_IME_CHAR messages, this code just blocks WM_IME_CHAR messages from being dispatched to view controls. Even though I'm not totally confident this code fixes this issue, I wish it does.
An experimental fix for Issue 7707.
To read crash dumps, it seems a rich-edit control crashes because it receives a WM_IME_CHAR message while it is processing a WM_IME_COMPOSITION message.
Since a rich-edit control does not need WM_IME_CHAR messages, this code just blocks WM_IME_CHAR messages from being dispatched to view controls.
Even though I'm not totally confident this code fixes this issue, I wish it does.

BUG=7707
Review URL: http://codereview.chromium.org/21535

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@10328 0039d316-1c4b-4281-b951-d872f2087c98

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