Add PERSISTENT_MAP usage for GpuMemoryBuffers.

content/common/gpu/gpu_memory_buffer_factory.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 "content/common/gpu/gpu_memory_buffer_factory.h"
 
 #include "base/logging.h"
 #include "content/common/gpu/gpu_memory_buffer_factory_shared_memory.h"
 
 #if defined(OS_MACOSX)
 #include "content/common/gpu/gpu_memory_buffer_factory_io_surface.h"
 #endif
 
 #if defined(OS_ANDROID)
 #include "content/common/gpu/gpu_memory_buffer_factory_surface_texture.h"
 #endif
 
 #if defined(USE_OZONE)
 #include "content/common/gpu/gpu_memory_buffer_factory_ozone_native_buffer.h"
 #endif
 
 namespace content {
 
 // static
 void GpuMemoryBufferFactory::GetSupportedTypes(
+    gfx::GpuMemoryBuffer::Usage usage,
     std::vector<gfx::GpuMemoryBufferType>* types) {
-  const gfx::GpuMemoryBufferType supported_types[] = {
+  switch (usage) {
+    case gfx::GpuMemoryBuffer::PERSISTENT_MAP: {
+      // TODO(reveman): PERSISTENT_MAP is only supported by shared memory
+      // buffers. crbug.com/489438
+      const gfx::GpuMemoryBufferType supported_types[] = {
+          gfx::SHARED_MEMORY_BUFFER};
+      types->assign(supported_types,
+                    supported_types + arraysize(supported_types));
+      break;
+    }
+    case gfx::GpuMemoryBuffer::MAP:
+    case gfx::GpuMemoryBuffer::SCANOUT: {
+      const gfx::GpuMemoryBufferType supported_types[] = {
 #if defined(OS_MACOSX)
-    gfx::IO_SURFACE_BUFFER,
+        gfx::IO_SURFACE_BUFFER,
 #endif
 #if defined(OS_ANDROID)
-    gfx::SURFACE_TEXTURE_BUFFER,
+        gfx::SURFACE_TEXTURE_BUFFER,
 #endif
 #if defined(USE_OZONE)
-    gfx::OZONE_NATIVE_BUFFER,
+        gfx::OZONE_NATIVE_BUFFER,
 #endif
-    gfx::SHARED_MEMORY_BUFFER
-  };
-  types->assign(supported_types, supported_types + arraysize(supported_types));
+        gfx::SHARED_MEMORY_BUFFER
+      };
+      types->assign(supported_types,
+                    supported_types + arraysize(supported_types));
+      break;
+    }
+  }
 }
 
 // static
 scoped_ptr<GpuMemoryBufferFactory> GpuMemoryBufferFactory::Create(
     gfx::GpuMemoryBufferType type) {
   switch (type) {
     case gfx::SHARED_MEMORY_BUFFER:
       return make_scoped_ptr(new GpuMemoryBufferFactorySharedMemory);
 #if defined(OS_MACOSX)
     case gfx::IO_SURFACE_BUFFER:
       return make_scoped_ptr(new GpuMemoryBufferFactoryIOSurface);
 #endif
 #if defined(OS_ANDROID)
     case gfx::SURFACE_TEXTURE_BUFFER:
       return make_scoped_ptr(new GpuMemoryBufferFactorySurfaceTexture);
 #endif
 #if defined(USE_OZONE)
     case gfx::OZONE_NATIVE_BUFFER:
       return make_scoped_ptr(new GpuMemoryBufferFactoryOzoneNativeBuffer);
 #endif
     default:
       NOTREACHED();
       return scoped_ptr<GpuMemoryBufferFactory>();
   }
 }
 
 }  // namespace content