Trace layer bounds/position/scroll_offset in cc.debug

Having these values (in particular scroll_offset) in layer tree traces
helped greatly when investigating crbug.com/346622

Review URL: https://codereview.chromium.org/177983007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254493 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 9 insertions, 0 deletions

diff --git a/cc/base/math_util.cc b/cc/base/math_util.cc
index e696ea6..b492404 100644
--- a/cc/base/math_util.cc
+++ b/cc/base/math_util.cc
@@ -579,6 +579,13 @@ scoped_ptr<base::Value> MathUtil::AsValue(const gfx::PointF& pt) {
   return res.PassAs<base::Value>();
 }
 
+scoped_ptr<base::Value> MathUtil::AsValue(const gfx::Vector2d& v) {
+  scoped_ptr<base::ListValue> res(new base::ListValue());
+  res->AppendInteger(v.x());
+  res->AppendInteger(v.y());
+  return res.PassAs<base::Value>();
+}
+
 scoped_ptr<base::Value> MathUtil::AsValue(const gfx::QuadF& q) {
   scoped_ptr<base::ListValue> res(new base::ListValue());
   res->AppendDouble(q.p1().x());
diff --git a/cc/base/math_util.h b/cc/base/math_util.h
index 9d6364ae..37b71dd 100644
--- a/cc/base/math_util.h
+++ b/cc/base/math_util.h
@@ -25,6 +25,7 @@ class Rect;
 class RectF;
 class Transform;
 class Vector2dF;
+class Vector2d;
 }
 
 namespace cc {
@@ -172,6 +173,7 @@ class CC_EXPORT MathUtil {
   static scoped_ptr<base::Value> AsValue(const gfx::Rect& r);
   static bool FromValue(const base::Value*, gfx::Rect* out_rect);
   static scoped_ptr<base::Value> AsValue(const gfx::PointF& q);
+  static scoped_ptr<base::Value> AsValue(const gfx::Vector2d& v);
   static scoped_ptr<base::Value> AsValue(const gfx::QuadF& q);
   static scoped_ptr<base::Value> AsValue(const gfx::RectF& rect);
   static scoped_ptr<base::Value> AsValue(const gfx::Transform& transform);