Add YUV_420_BIPLANAR to gfx::BufferFormat.

gpu/command_buffer/service/image_factory.cc

Index: gpu/command_buffer/service/image_factory.cc
diff --git a/gpu/command_buffer/service/image_factory.cc b/gpu/command_buffer/service/image_factory.cc
index 9d4e659d02caee7b94fcaaeccbe9d2cb753883be..a1a3f15a36ccf7801d933a2e799bc147ff66a538 100644
--- a/gpu/command_buffer/service/image_factory.cc
+++ b/gpu/command_buffer/service/image_factory.cc
@@ -88,6 +88,7 @@ bool ImageFactory::IsGpuMemoryBufferFormatSupported(
     case gfx::BufferFormat::RGBA_8888:
     case gfx::BufferFormat::RGBX_8888:
     case gfx::BufferFormat::YUV_420:
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
       return true;
   }
 
@@ -115,6 +116,7 @@ bool ImageFactory::IsImageSizeValidForGpuMemoryBufferFormat(
     case gfx::BufferFormat::RGBX_8888:
       return true;
     case gfx::BufferFormat::YUV_420:
+    case gfx::BufferFormat::YUV_420_BIPLANAR:
       // U and V planes are subsampled by a factor of 2.
       return size.width() % 2 == 0 && size.height() % 2 == 0;
   }