Implement support for using GL ES 3.0 with command buffer

samplecode/SampleApp.cpp

Index: samplecode/SampleApp.cpp
diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index 65e3c17a444292a575c11ea9ee5361607d5659fa..6a78dbc27ce7662fd5e4fe7e19460a77cffa21f4 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -187,9 +187,9 @@ public:
                 break;
 #endif // SK_ANGLE
 #if SK_COMMAND_BUFFER
-            case kCommandBuffer_DeviceType:
+            case kCommandBufferES2_DeviceType:
                 // Command buffer is really the only other odd man out :D
-                fBackend = kCommandBuffer_BackEndType;
+                fBackend = kCommandBufferES2_BackEndType;
                 break;
 #endif // SK_COMMAND_BUFFER
             default:
@@ -218,7 +218,7 @@ public:
                 break;
 #endif // SK_ANGLE
 #if SK_COMMAND_BUFFER
-            case kCommandBuffer_DeviceType:
+            case kCommandBufferES2_DeviceType:
                 glInterface.reset(GrGLCreateCommandBufferInterface());
                 break;
 #endif // SK_COMMAND_BUFFER
@@ -673,7 +673,7 @@ static inline SampleWindow::DeviceType cycle_devicetype(SampleWindow::DeviceType
         , SampleWindow::kANGLE_DeviceType
 #endif // SK_ANGLE
 #if SK_COMMAND_BUFFER
-        , SampleWindow::kCommandBuffer_DeviceType
+        , SampleWindow::kCommandBufferES2_DeviceType
 #endif // SK_COMMAND_BUFFER
 #endif // SK_SUPPORT_GPU
     };
@@ -839,7 +839,7 @@ SampleWindow::SampleWindow(void* hwnd, int argc, char** argv, DeviceManager* dev
     fDeviceType = kANGLE_DeviceType;
 #endif
 #if SK_COMMAND_BUFFER && DEFAULT_TO_COMMAND_BUFFER
-    fDeviceType = kCommandBuffer_DeviceType;
+    fDeviceType = kCommandBufferES2_DeviceType;
 #endif
 
     fUseClip = false;