Move NumberOfPlanesForGpuMemoryBufferFormat to gfx

components/view_manager/gles2/mojo_gpu_memory_buffer.cc

Index: components/view_manager/gles2/mojo_gpu_memory_buffer.cc
diff --git a/components/view_manager/gles2/mojo_gpu_memory_buffer.cc b/components/view_manager/gles2/mojo_gpu_memory_buffer.cc
index 45450506c39ca409cb216be42a353c51afffe3e5..dd9361550d0e92a94fad172306418e7637702823 100644
--- a/components/view_manager/gles2/mojo_gpu_memory_buffer.cc
+++ b/components/view_manager/gles2/mojo_gpu_memory_buffer.cc
@@ -12,26 +12,6 @@ namespace gles2 {
 
 namespace {
 
-int NumberOfPlanesForGpuMemoryBufferFormat(gfx::BufferFormat format) {
-  switch (format) {
-    case gfx::BufferFormat::ATC:
-    case gfx::BufferFormat::ATCIA:
-    case gfx::BufferFormat::DXT1:
-    case gfx::BufferFormat::DXT5:
-    case gfx::BufferFormat::ETC1:
-    case gfx::BufferFormat::R_8:
-    case gfx::BufferFormat::RGBA_4444:
-    case gfx::BufferFormat::RGBA_8888:
-    case gfx::BufferFormat::RGBX_8888:
-    case gfx::BufferFormat::BGRA_8888:
-      return 1;
-    case gfx::BufferFormat::YUV_420:
-      return 3;
-  }
-  NOTREACHED();
-  return 0;
-}
-
 size_t SubsamplingFactor(gfx::BufferFormat format, int plane) {
   switch (format) {
     case gfx::BufferFormat::ATC:
@@ -86,7 +66,7 @@ size_t StrideInBytes(size_t width, gfx::BufferFormat format, int plane) {
 
 size_t BufferSizeInBytes(const gfx::Size& size, gfx::BufferFormat format) {
   size_t size_in_bytes = 0;
-  int num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format);
+  int num_planes = gfx::GpuMemoryBuffer::NumberOfPlanes(format);
   for (int i = 0; i < num_planes; ++i) {
     size_in_bytes += StrideInBytes(size.width(), format, i) *
                      (size.height() / SubsamplingFactor(format, i));
@@ -131,7 +111,7 @@ bool MojoGpuMemoryBufferImpl::Map(void** data) {
     return false;
   mapped_ = true;
   size_t offset = 0;
-  int num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format_);
+  int num_planes = gfx::GpuMemoryBuffer::NumberOfPlanes(format_);
   for (int i = 0; i < num_planes; ++i) {
     data[i] = reinterpret_cast<uint8*>(shared_memory_->memory()) + offset;
     offset += StrideInBytes(size_.width(), format_, i) *
@@ -155,7 +135,7 @@ gfx::BufferFormat MojoGpuMemoryBufferImpl::GetFormat() const {
 }
 
 void MojoGpuMemoryBufferImpl::GetStride(int* stride) const {
-  int num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format_);
+  int num_planes = gfx::GpuMemoryBuffer::NumberOfPlanes(format_);
   for (int i = 0; i < num_planes; ++i)
     stride[i] =
         base::checked_cast<int>(StrideInBytes(size_.width(), format_, i));