content: Add DeletedGpuMemoryBuffer IPC.

content/common/gpu/client/gpu_memory_buffer_impl_linux.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl_linux.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_linux.cc b/content/common/gpu/client/gpu_memory_buffer_impl_linux.cc
index 5f5405b9963199bd524fa631e636576d67bec0f1..0fc371b99dac9f24de68c5c5d347bec58863eca8 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_linux.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_linux.cc
@@ -44,8 +44,15 @@ void GpuMemoryBufferImpl::AllocateForChildProcess(
 }
 
 // static
+void GpuMemoryBufferImpl::DeletedByChildProcess(
+    gfx::GpuMemoryBufferType type,
+    const gfx::GpuMemoryBufferId& id,
+    base::ProcessHandle child_process) {
+}
+
+// static
 scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImpl::CreateFromHandle(
-    gfx::GpuMemoryBufferHandle handle,
+    const gfx::GpuMemoryBufferHandle& handle,
     const gfx::Size& size,
     unsigned internalformat) {
   switch (handle.type) {