content: Add command line flag for native GPU memory buffers.

content/common/gpu/client/gpu_memory_buffer_impl.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl.cc b/content/common/gpu/client/gpu_memory_buffer_impl.cc
index 972ffa65e3a5ae1d7a89d147ac2ff575c32320a4..48f35a8e9728b562d0b75abd6c533b91d7b1743d 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl.cc
@@ -11,6 +11,16 @@
 namespace content {
 namespace {
 
+const struct TypeNamePair {
+  gfx::GpuMemoryBufferType type;
+  const char* name;
+} kTypeNamePairs[] = {
+  { gfx::SHARED_MEMORY_BUFFER, "shmem" },
+  { gfx::IO_SURFACE_BUFFER, "iosurface" },
+  { gfx::SURFACE_TEXTURE_BUFFER, "surfacetexture" },
+  { gfx::OZONE_NATIVE_BUFFER, "ozone" }
+};
+
 gfx::GpuMemoryBufferType g_preferred_type = gfx::EMPTY_BUFFER;
 
 struct DefaultPreferredType {
@@ -44,6 +54,27 @@ GpuMemoryBufferImpl::~GpuMemoryBufferImpl() {
 }
 
 // static
+gfx::GpuMemoryBufferType GpuMemoryBufferImpl::GetNamedType(
+    const std::string& name) {
+  for (size_t i = 0; i < arraysize(kTypeNamePairs); ++i) {

[piman, 2014/11/19 02:39:40]

nit: range for?

+    if (name == kTypeNamePairs[i].name)
+      return kTypeNamePairs[i].type;
+  }
+
+  return gfx::EMPTY_BUFFER;
+}
+
+// static
+const char* GpuMemoryBufferImpl::GetTypeName(gfx::GpuMemoryBufferType type) {
+  for (size_t i = 0; i < arraysize(kTypeNamePairs); ++i) {

[piman, 2014/11/19 02:39:40]

nit: range for?

+    if (type == kTypeNamePairs[i].type)
+      return kTypeNamePairs[i].name;
+  }
+
+  return "unknown";
+}
+
+// static
 void GpuMemoryBufferImpl::SetPreferredType(gfx::GpuMemoryBufferType type) {
   // EMPTY_BUFFER is a reserved value and not a valid preferred type.
   DCHECK_NE(gfx::EMPTY_BUFFER, type);