More out-of-lining of test code, along with a bunch of GMOCK objects.

media/tools/omx_test/file_reader_util.cc

Index: media/tools/omx_test/file_reader_util.cc
diff --git a/media/tools/omx_test/file_reader_util.cc b/media/tools/omx_test/file_reader_util.cc
index 1ba7ceadaa45dc288ec16057e40afd184b96ec60..a599d2f1e88845e0712216deb6d8dde1243f2749 100644
--- a/media/tools/omx_test/file_reader_util.cc
+++ b/media/tools/omx_test/file_reader_util.cc
@@ -46,6 +46,8 @@ YuvFileReader::YuvFileReader(const FilePath& path,
       output_nv21_(enable_csc) {
 }
 
+YuvFileReader::~YuvFileReader() {}
+
 void YuvFileReader::Read(uint8** output, int* size) {
   if (!file()) {
     *size = 0;
@@ -230,6 +232,8 @@ H264FileReader::H264FileReader(const FilePath& path)
       used_(0) {
 }
 
+H264FileReader::~H264FileReader() {}
+
 void H264FileReader::Read(uint8** output, int *size) {
   // Fill the buffer when it's less than half full.
   int read = 0;