Update from https://crrev.com/318214

gpu/command_buffer/tests/gl_manager.cc

Index: gpu/command_buffer/tests/gl_manager.cc
diff --git a/gpu/command_buffer/tests/gl_manager.cc b/gpu/command_buffer/tests/gl_manager.cc
index 43120b9be58dbf7a35f0cfdfabad05b918d9c5a1..4e4eccb2abed4026fc23ec1c918f52a9f3af8d74 100644
--- a/gpu/command_buffer/tests/gl_manager.cc
+++ b/gpu/command_buffer/tests/gl_manager.cc
@@ -40,6 +40,14 @@ namespace {
 
 size_t StrideInBytes(size_t width, gfx::GpuMemoryBuffer::Format format) {
   switch (format) {
+    case gfx::GpuMemoryBuffer::ATCIA:
+    case gfx::GpuMemoryBuffer::DXT5:
+      return width;
+    case gfx::GpuMemoryBuffer::ATC:
+    case gfx::GpuMemoryBuffer::DXT1:
+    case gfx::GpuMemoryBuffer::ETC1:
+      DCHECK_EQ(width % 2, 0U);
+      return width / 2;
     case gfx::GpuMemoryBuffer::RGBA_8888:
     case gfx::GpuMemoryBuffer::BGRA_8888:
       return width * 4;