The code is from http://smhasher.googlecode.com/svn/trunk/
revision 152.

Fixes error:
../../src/third_party/murmurhash/MurmurHash3.cpp:57:41: error: inlining failed in call to always_inline ‘uint32_t getblock(const uint32_t*, int)’: function body can be overwritten at link time
 FORCE_INLINE uint32_t getblock ( const uint32_t * p, int i )

The error was previously fixed by adding a pragma to ignore the warning.

The problem the compiler is complaining is that the function is visible
to outside of the compilation unit. This can be fixed by making the
function inline (as in the new version of the MurmurHash3.cpp) or
static.

Change-Id: I7a1262964489d72de8b4707ca2284363c8b46e20
Reviewed-on: https://chromium-review.googlesource.com/291620Tested-by: Kimmo Kinnunen <kkinnunen@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Dongseong Hwang <dongseong.hwang@intel.com>
Tested-by: Dongseong Hwang <dongseong.hwang@intel.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>