Bug 1295886 - P11. Enable FFmpeg small mode. r=gerald

This mostly removes static strings declaration, replacing them with null pointers.

It does cause to switch to algorithms that are more geared toward space saving than speed gain. However, those are mostly in hash calculations, which the FLAC decoder doesn't use.

MozReview-Commit-ID: 6Kl6xxlBOnw

--HG--
extra : rebase_source : 051ac58cd1ed3b617684cda0bd4a93687bbc9924

media/ffvpx/config_android.h

@@ -526,7 +526,7 @@
 #define CONFIG_RUNTIME_CPUDETECT 1
 #define CONFIG_SAFE_BITSTREAM_READER 1
 #define CONFIG_SHARED 1
-#define CONFIG_SMALL 0
+#define CONFIG_SMALL 1
 #define CONFIG_STATIC 0
 #define CONFIG_SWSCALE_ALPHA 1
 #define CONFIG_GPL 0

media/ffvpx/libavcodec/moz.build

@@ -25,7 +25,6 @@ SOURCES += [
     'null_bsf.c',
     'options.c',
     'parser.c',
-    'profiles.c',
     'pthread.c',
     'pthread_frame.c',
     'pthread_slice.c',
@@ -45,6 +44,7 @@ if not CONFIG['MOZ_FFVPX_FLACONLY']:
         'imgconvert.c',
         'log2_tab.c',
         'mathtables.c',
+        'profiles.c',
         'qsv_api.c',
         'raw.c',
         'resample.c',