gpu: Fix some context lost marking glitches+leaks and add UMA stats

gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
index cae6c006b75b3b621bd50fa5daeedbf30c47988c..d3a20b3c2a7aa89e0e094f25438175a3c62b7875 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest.cc
@@ -1125,17 +1125,30 @@ TEST_P(GLES2DecoderManualInitTest, ImmutableCopyTexImage2D) {
   EXPECT_EQ(GL_INVALID_OPERATION, GetGLError());
 }
 
-TEST_P(GLES2DecoderTest, LoseContextCHROMIUMValidArgs) {
-  EXPECT_CALL(*mock_decoder_, LoseContext(GL_GUILTY_CONTEXT_RESET_ARB))
+TEST_P(GLES2DecoderTest, LoseContextCHROMIUMGuilty) {
+  EXPECT_CALL(*mock_decoder_, MarkContextLost(error::kInnocent))
       .Times(1);
   cmds::LoseContextCHROMIUM cmd;
-  cmd.Init(GL_GUILTY_CONTEXT_RESET_ARB, GL_GUILTY_CONTEXT_RESET_ARB);
+  cmd.Init(GL_GUILTY_CONTEXT_RESET_ARB, GL_INNOCENT_CONTEXT_RESET_ARB);
   EXPECT_EQ(error::kLostContext, ExecuteCmd(cmd));
   EXPECT_EQ(GL_NO_ERROR, GetGLError());
+  EXPECT_TRUE(decoder_->WasContextLost());
+  EXPECT_TRUE(decoder_->WasContextLostByRobustnessExtension());
+}
+
+TEST_P(GLES2DecoderTest, LoseContextCHROMIUMUnkown) {
+  EXPECT_CALL(*mock_decoder_, MarkContextLost(error::kUnknown))
+      .Times(1);
+  cmds::LoseContextCHROMIUM cmd;
+  cmd.Init(GL_UNKNOWN_CONTEXT_RESET_ARB, GL_UNKNOWN_CONTEXT_RESET_ARB);
+  EXPECT_EQ(error::kLostContext, ExecuteCmd(cmd));
+  EXPECT_EQ(GL_NO_ERROR, GetGLError());
+  EXPECT_TRUE(decoder_->WasContextLost());
+  EXPECT_TRUE(decoder_->WasContextLostByRobustnessExtension());
 }
 
 TEST_P(GLES2DecoderTest, LoseContextCHROMIUMInvalidArgs0_0) {
-  EXPECT_CALL(*mock_decoder_, LoseContext(_))
+  EXPECT_CALL(*mock_decoder_, MarkContextLost(_))
       .Times(0);
   cmds::LoseContextCHROMIUM cmd;
   cmd.Init(GL_NONE, GL_GUILTY_CONTEXT_RESET_ARB);
@@ -1144,7 +1157,7 @@ TEST_P(GLES2DecoderTest, LoseContextCHROMIUMInvalidArgs0_0) {
 }
 
 TEST_P(GLES2DecoderTest, LoseContextCHROMIUMInvalidArgs1_0) {
-  EXPECT_CALL(*mock_decoder_, LoseContext(_))
+  EXPECT_CALL(*mock_decoder_, MarkContextLost(_))
       .Times(0);
   cmds::LoseContextCHROMIUM cmd;
   cmd.Init(GL_GUILTY_CONTEXT_RESET_ARB, GL_NONE);