linux: implement gpu plugin

gpu/command_buffer/service/gpu_processor.cc

Index: gpu/command_buffer/service/gpu_processor.cc
diff --git a/gpu/command_buffer/service/gpu_processor.cc b/gpu/command_buffer/service/gpu_processor.cc
index 0968215138edbfdcc72c3dde9c0a06347e00b39b..c0953415a0e2ea730c62cef7094d6938f839c7b5 100644
--- a/gpu/command_buffer/service/gpu_processor.cc
+++ b/gpu/command_buffer/service/gpu_processor.cc
@@ -9,6 +9,25 @@ using ::base::SharedMemory;
 
 namespace gpu {
 
+GPUProcessor::GPUProcessor(CommandBuffer* command_buffer)
+    : command_buffer_(command_buffer),
+      commands_per_update_(100) {
+  DCHECK(command_buffer);
+  decoder_.reset(gles2::GLES2Decoder::Create());
+  decoder_->set_engine(this);
+}
+
+GPUProcessor::GPUProcessor(CommandBuffer* command_buffer,
+                           gles2::GLES2Decoder* decoder,
+                           CommandParser* parser,
+                           int commands_per_update)
+    : command_buffer_(command_buffer),
+      commands_per_update_(commands_per_update) {
+  DCHECK(command_buffer);
+  decoder_.reset(decoder);
+  parser_.reset(parser);
+}
+
 GPUProcessor::~GPUProcessor() {
 }
 
@@ -32,6 +51,8 @@ void GPUProcessor::ProcessCommands() {
         command_buffer_->SetParseError(parse_error);
         command_buffer_->RaiseErrorStatus();
         return;
+      case gpu::parse_error::kParseNoError:
+        break;
     }
 
     ++commands_processed;