Add memory limits struct to in-process context

webkit/common/gpu/context_provider_in_process.cc

Index: webkit/common/gpu/context_provider_in_process.cc
diff --git a/webkit/common/gpu/context_provider_in_process.cc b/webkit/common/gpu/context_provider_in_process.cc
index 3785d38add9fe0ed20caa9234da8837aa6bb8adf..e4ca1d8a42cfdb50838f485c9387677a0c631795 100644
--- a/webkit/common/gpu/context_provider_in_process.cc
+++ b/webkit/common/gpu/context_provider_in_process.cc
@@ -110,6 +110,13 @@ bool ContextProviderInProcess::BindToCurrentThread() {
 
 void ContextProviderInProcess::InitializeCapabilities() {
   capabilities_.gpu = context3d_->GetImplementation()->capabilities();
+
+  size_t mapped_memory_limit = context3d_->GetMappedMemoryLimit();
+  capabilities_.max_transfer_buffer_usage_bytes =
+      mapped_memory_limit ==
+              WebGraphicsContext3DInProcessCommandBufferImpl::kNoLimit
+          ? std::numeric_limits<size_t>::max()
+          : mapped_memory_limit;
 }
 
 cc::ContextProvider::Capabilities