audio use xmmintrin for sse to reduce requirement from sse2 to sse BUG=44643 TEST=build with compiler options that enable sse but disable sse2 and chrome should still build and run on Pentium3.
audio use xmmintrin for sse to reduce requirement from sse2 to sse
BUG=44643
TEST=build with compiler options that enable sse but disable sse2 and chrome should still build and run on Pentium3.

Review URL: http://codereview.chromium.org/2360002

git-svn-id: http://src.chromium.org/svn/trunk/src@48515 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: d7172511c8993f1395297978b368c83e8e5f3a1a
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser