Accumulate EXT_TX counts for multithread

EXT_TX introduces some new symbols to be decoded.
The encoder counts how many times these are used.
In multithreaded mode, the counts from the worker threads
need to be accumulated into the main thread.

This change means that VP10/VPxEncoderThreadTest now works
with more choices of cpu-used and number of passes.

Change-Id: Ibe7e6a3c58145265f4ead155ff98fb4cb37c3513
diff --git a/test/vp9_ethread_test.cc b/test/vp9_ethread_test.cc
index 767c5c1..e621d84 100644
--- a/test/vp9_ethread_test.cc
+++ b/test/vp9_ethread_test.cc
@@ -137,6 +137,6 @@
 
 VP10_INSTANTIATE_TEST_CASE(
     VPxEncoderThreadTest,
-    ::testing::Values(::libvpx_test::kTwoPassGood),
-    ::testing::Range(0, 1));
+    ::testing::Values(::libvpx_test::kTwoPassGood, ::libvpx_test::kOnePassGood),
+    ::testing::Range(0, 9));
 }  // namespace
diff --git a/vp10/common/thread_common.c b/vp10/common/thread_common.c
index e83cb8e..5523abb 100644
--- a/vp10/common/thread_common.c
+++ b/vp10/common/thread_common.c
@@ -435,6 +435,17 @@
       comps->fp[i] += comps_t->fp[i];
   }
 
+#if CONFIG_EXT_TX
+  for (i = 0; i < EXT_TX_SIZES; i++)
+    for (j = 0; j < TX_TYPES; j++)
+      cm->counts.inter_tx_type[i][j] += counts->inter_tx_type[i][j];
+
+  for (i = 0; i < EXT_TX_SIZES; i++)
+    for (j = 0; j < INTRA_MODES; j++)
+      for (k = 0; k < TX_TYPES; k++)
+        cm->counts.intra_tx_type[i][j][k] += counts->intra_tx_type[i][j][k];
+#endif
+
 #if CONFIG_MISC_FIXES
   for (i = 0; i < PREDICTION_PROBS; i++)
     for (j = 0; j < 2; j++)