HBitmap can't be immutable

cc/test/fake_content_layer_client.h

Index: cc/test/fake_content_layer_client.h
diff --git a/cc/test/fake_content_layer_client.h b/cc/test/fake_content_layer_client.h
index 53548338c0304730d2f35b1ed3af1c121c1e7d29..7170c6abd355c2f09b26abb194a7338dbc6b4827 100644
--- a/cc/test/fake_content_layer_client.h
+++ b/cc/test/fake_content_layer_client.h
@@ -11,6 +11,8 @@
 #include <vector>
 
 #include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "cc/layers/content_layer_client.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "ui/gfx/geometry/rect.h"
@@ -21,6 +23,16 @@ class SkImage;
 
 namespace cc {
 
+class FakeOnPaintDelegate {
+ public:
+  FakeOnPaintDelegate() {}
+  virtual ~FakeOnPaintDelegate() {}
+  virtual void OnPaint(SkCanvas* canvas,
+                       const gfx::Rect& invalidation) = 0;
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FakeOnPaintDelegate);
+};
+
 class FakeContentLayerClient : public ContentLayerClient {
  public:
   struct ImageData {
@@ -91,6 +103,10 @@ class FakeContentLayerClient : public ContentLayerClient {
     bounds_set_ = true;
   }
 
+  void set_on_paint_delegate(scoped_ptr<FakeOnPaintDelegate> delegate) {
+    delegate_ = std::move(delegate);
+  }
+
  private:
   typedef std::vector<std::pair<gfx::RectF, SkPaint>> RectPaintVector;
   typedef std::vector<ImageData> ImageVector;
@@ -104,6 +120,7 @@ class FakeContentLayerClient : public ContentLayerClient {
   size_t reported_memory_usage_;
   gfx::Size bounds_;
   bool bounds_set_;
+  scoped_ptr<FakeOnPaintDelegate> delegate_;
 };
 
 }  // namespace cc