Move NumberOfPlanesForGpuMemoryBufferFormat to gfx

cc/test/test_gpu_memory_buffer_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/test/test_gpu_memory_buffer_manager.h"
 
 #include "base/logging.h"
 #include "base/numerics/safe_conversions.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
 namespace cc {
 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:
     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:
@@ skipping 34 matching lines @@
       return width * 4;
     case gfx::BufferFormat::YUV_420:
       return width / SubsamplingFactor(format, plane);
   }
   NOTREACHED();
   return 0;
 }
 
 size_t BufferSizeInBytes(const gfx::Size& size, gfx::BufferFormat format) {
   size_t size_in_bytes = 0;
-  int num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format);
+  int num_planes =
+      static_cast<int>(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));
   }
   return size_in_bytes;
 }
 
 class GpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
  public:
   GpuMemoryBufferImpl(const gfx::Size& size,
                       gfx::BufferFormat format,
                       scoped_ptr<base::SharedMemory> shared_memory)
       : size_(size),
         format_(format),
         shared_memory_(shared_memory.Pass()),
         mapped_(false) {}
 
   // Overridden from gfx::GpuMemoryBuffer:
   bool Map(void** data) override {
     DCHECK(!mapped_);
     if (!shared_memory_->Map(BufferSizeInBytes(size_, format_)))
       return false;
     mapped_ = true;
     size_t offset = 0;
-    int num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format_);
+    int num_planes =
+        static_cast<int>(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) *
                 (size_.height() / SubsamplingFactor(format_, i));
     }
     return true;
   }
   void Unmap() override {
     DCHECK(mapped_);
     shared_memory_->Unmap();
     mapped_ = false;
   }
   bool IsMapped() const override { return mapped_; }
   gfx::BufferFormat GetFormat() const override { return format_; }
   void GetStride(int* stride) const override {
-    int num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format_);
+    int num_planes =
+        static_cast<int>(gfx::GpuMemoryBuffer::NumberOfPlanes(format_));
     for (int i = 0; i < num_planes; ++i)
       stride[i] =
           base::checked_cast<int>(StrideInBytes(size_.width(), format_, i));
   }
   gfx::GpuMemoryBufferId GetId() const override {
     NOTREACHED();
     return 0;
   }
   gfx::GpuMemoryBufferHandle GetHandle() const override {
     gfx::GpuMemoryBufferHandle handle;
@@ skipping 36 matching lines @@
     ClientBuffer buffer) {
   return reinterpret_cast<gfx::GpuMemoryBuffer*>(buffer);
 }
 
 void TestGpuMemoryBufferManager::SetDestructionSyncPoint(
     gfx::GpuMemoryBuffer* buffer,
     uint32 sync_point) {
 }
 
 }  // namespace cc