Merge changes I86b21186,Ifde2849f,Ic53cdb8c,Id3db2ae8,Iba3c63cd,I744342b1,I627dc800,Ie1c8830c,I1d43acef,I3e29d8d2,I521ca615
* changes:
resize_test.cc: remove unused param warnings
invalid_file_test.cc: remove unused param warnings
fdct8x8_test.cc: remove unused param warnings
fdct4x4_test.cc: remove unused param warnings
tests/reference_32x32_dct_1d: remove unused stride param
dct16x16_test.cc: remove unused param warnings
datarate_test.cc: remove unused param warnings
frame_size_tests.cc: remove unused param warnings
encode_test_driver.cc: remove unused param warnings
encode_test_driver.h: remove unused param warnings
decode_test_driver.h: remove unused param warnings
