Change vsmul method from vDSP_ to VectorMatch.
Change vsmul method from vDSP_ to VectorMatch.

Inside of VectorMatch::vsmul is calling vDSP_vsmul when MACOS macro is enabled.
FFTFrameMac is used both method VectorMatch::vsmul and  vDSP_vsmul.
It needs to change to VectorMatch for code maintenance.

BUG=411128

Review URL: https://codereview.chromium.org/545773002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@181444 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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