Port folder renaming changes from AOM

Manually cherry-picked commits:
ceef058 libvpx->libaom part2
3d26d91 libvpx -> libaom
cfea7dd vp10/ -> av1/
3a8eff7 Fix a build issue for a test
bf4202e Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc
diff --git a/test/ivf_video_source.h b/test/ivf_video_source.h
index b87624a..7b81bb9 100644
--- a/test/ivf_video_source.h
+++ b/test/ivf_video_source.h
@@ -15,7 +15,7 @@
 #include <string>
 #include "test/video_source.h"
 
-namespace libvpx_test {
+namespace libaom_test {
 const unsigned int kCodeBufferSize = 256 * 1024;
 const unsigned int kIvfFileHdrSize = 32;
 const unsigned int kIvfFrameHdrSize = 12;
@@ -40,7 +40,7 @@
 
   virtual void Init() {
     // Allocate a buffer for read in the compressed video frame.
-    compressed_frame_buf_ = new uint8_t[libvpx_test::kCodeBufferSize];
+    compressed_frame_buf_ = new uint8_t[libaom_test::kCodeBufferSize];
     ASSERT_TRUE(compressed_frame_buf_ != NULL)
         << "Allocate frame buffer failed";
   }
@@ -101,6 +101,6 @@
   bool end_of_file_;
 };
 
-}  // namespace libvpx_test
+}  // namespace libaom_test
 
 #endif  // TEST_IVF_VIDEO_SOURCE_H_