Move NumberOfPlanesForGpuMemoryBufferFormat to gfx

content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc b/content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc
index 9db36962d20ed24423a55646490399a8aef00764..d869ef0d408d14608fbacc44ebb4392cad289d08 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.cc
@@ -6,6 +6,7 @@
 
 #include "base/bind.h"
 #include "base/numerics/safe_math.h"
+#include "ui/gfx/buffer_format_util.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace content {
@@ -149,7 +150,7 @@ bool GpuMemoryBufferImplSharedMemory::IsSizeValidForFormat(
     case gfx::BufferFormat::RGBX_8888:
       return true;
     case gfx::BufferFormat::YUV_420: {
-      size_t num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format);
+      size_t num_planes = gfx::NumberOfPlanesForBufferFormat(format);
       for (size_t i = 0; i < num_planes; ++i) {
         size_t factor = SubsamplingFactor(format, i);
         if (size.width() % factor || size.height() % factor)
@@ -166,7 +167,7 @@ bool GpuMemoryBufferImplSharedMemory::IsSizeValidForFormat(
 bool GpuMemoryBufferImplSharedMemory::Map(void** data) {
   DCHECK(!mapped_);
   size_t offset = 0;
-  size_t num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format_);
+  size_t num_planes = gfx::NumberOfPlanesForBufferFormat(format_);
   for (size_t i = 0; i < num_planes; ++i) {
     data[i] = reinterpret_cast<uint8*>(shared_memory_->memory()) + offset;
     size_t row_size_in_bytes = 0;
@@ -186,7 +187,7 @@ void GpuMemoryBufferImplSharedMemory::Unmap() {
 }
 
 void GpuMemoryBufferImplSharedMemory::GetStride(int* stride) const {
-  size_t num_planes = NumberOfPlanesForGpuMemoryBufferFormat(format_);
+  size_t num_planes = gfx::NumberOfPlanesForBufferFormat(format_);
   for (size_t i = 0; i < num_planes; ++i) {
     size_t row_size_in_bytes = 0;
     bool valid_row_size =