Call xglMakeCurrent for each command buffer to allow for multiple GL contexts...

gpu/command_buffer/service/gpu_processor_unittest.cc

Index: gpu/command_buffer/service/gpu_processor_unittest.cc
===================================================================
--- gpu/command_buffer/service/gpu_processor_unittest.cc	(revision 36557)
+++ gpu/command_buffer/service/gpu_processor_unittest.cc	(working copy)
@@ -8,6 +8,7 @@
 #include "gpu/command_buffer/service/mocks.h"
 #include "gpu/command_buffer/service/gpu_processor.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
+#include "gpu/command_buffer/service/gles2_cmd_decoder_mock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
@@ -43,7 +44,7 @@
 
     async_api_.reset(new StrictMock<AsyncAPIMock>);
 
-    decoder_ = gles2::GLES2Decoder::Create();
+    decoder_ = new gles2::MockGLES2Decoder();
 
     parser_ = new CommandParser(buffer_,
                                 kRingBufferEntries,
@@ -70,7 +71,7 @@
   scoped_ptr<::base::SharedMemory> shared_memory_;
   Buffer shared_memory_buffer_;
   int32* buffer_;
-  gles2::GLES2Decoder* decoder_;
+  gles2::MockGLES2Decoder* decoder_;
   CommandParser* parser_;
   scoped_ptr<AsyncAPIMock> async_api_;
   scoped_refptr<GPUProcessor> processor_;
@@ -129,6 +130,16 @@
   processor_->ProcessCommands();
 }
 
+TEST_F(GPUProcessorTest, ProcessorSetsAndResetsTheGLContext) {
+  EXPECT_CALL(*decoder_, MakeCurrent())
+    .WillOnce(Return(true));
+  EXPECT_CALL(*command_buffer_, GetPutOffset())
+    .WillOnce(Return(0));
+  EXPECT_CALL(*command_buffer_, SetGetOffset(0));
+
+  processor_->ProcessCommands();
+}
+
 TEST_F(GPUProcessorTest, PostsTaskToFinishRemainingCommands) {
   CommandHeader* header = reinterpret_cast<CommandHeader*>(&buffer_[0]);
   header[0].command = 7;