rename GrDrawTargetCaps.h to GrCaps.h and move to include

Review URL: https://codereview.chromium.org/1135113005
diff --git a/src/gpu/GrPipeline.cpp b/src/gpu/GrPipeline.cpp
index 5feac78..f17f402 100644
--- a/src/gpu/GrPipeline.cpp
+++ b/src/gpu/GrPipeline.cpp
@@ -7,8 +7,8 @@
 
 #include "GrPipeline.h"
 
+#include "GrCaps.h"
 #include "GrBatch.h"
-#include "GrDrawTargetCaps.h"
 #include "GrGpu.h"
 #include "GrPipelineBuilder.h"
 #include "GrProcOptInfo.h"