Add onMemoryDump to GrContext

src/gpu/gl/GrGLTextureRenderTarget.cpp

Index: src/gpu/gl/GrGLTextureRenderTarget.cpp
diff --git a/src/gpu/gl/GrGLTextureRenderTarget.cpp b/src/gpu/gl/GrGLTextureRenderTarget.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..b6068a4e56efc5b250872df3ed7931251357d034
--- /dev/null
+++ b/src/gpu/gl/GrGLTextureRenderTarget.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrGLTextureRenderTarget.h"
+
+#include "SkTraceMemoryDump.h"
+
+// GrGLTextureRenderTarget must dump both of its superclasses.
+void GrGLTextureRenderTarget::dumpMemoryStatistics(
+    SkTraceMemoryDump* traceMemoryDump) const {
+  GrGLRenderTarget::dumpMemoryStatistics(traceMemoryDump);
+
+  // Also dump the GrGLTexture's memory. Due to this resource having both a
+  // texture and a
+  // renderbuffer component, dump as skia/gpu_resources/resource_#/texture
+  SkString dumpName("skia/gpu_resources/resource_");
+  dumpName.appendS32(this->getUniqueID());
+  dumpName.append("/texture");
+
+  // Use the texture's gpuMemorySize, not our own, which includes the
+  // renderbuffer as well.
+  size_t size = GrGLTexture::gpuMemorySize();
+
+  traceMemoryDump->dumpNumericValue(dumpName.c_str(), "size", "bytes", size);
+
+  if (this->isPurgeable()) {
+    traceMemoryDump->dumpNumericValue(dumpName.c_str(), "purgeable_size",
+                                      "bytes", size);
+  }
+
+  SkString texture_id;
+  texture_id.appendU32(this->textureID());
+  traceMemoryDump->setMemoryBacking(dumpName.c_str(), "gl_texture",
+                                    texture_id.c_str());
+}