Adding option in SkPicture to record device-space bounds of draw commands.

src/core/SkBBoxHierarchyRecord.cpp

Index: src/core/SkBBoxHierarchyRecord.cpp
===================================================================
--- src/core/SkBBoxHierarchyRecord.cpp	(revision 9110)
+++ src/core/SkBBoxHierarchyRecord.cpp	(working copy)
@@ -19,12 +19,21 @@
     fBoundingHierarchy->setClient(this);
 }
 
+#if SK_RECORD_BOUNDS_IN_PICTURE
+void SkBBoxHierarchyRecord::handleBBox(uint32_t offset) {
+    if (!fLastDrawBounds.isEmpty()) {
+        SkPictureStateTree::Draw* draw = fStateTree->appendDraw(offset);
+        fBoundingHierarchy->insert(draw, fLastDrawBounds, true);
+    }
+}
+#else
 void SkBBoxHierarchyRecord::handleBBox(const SkRect& bounds) {
     SkIRect r;
     bounds.roundOut(&r);
     SkPictureStateTree::Draw* draw = fStateTree->appendDraw(this->writeStream().size());
     fBoundingHierarchy->insert(draw, r, true);
 }
+#endif
 
 int SkBBoxHierarchyRecord::save(SaveFlags flags) {
     fStateTree->appendSave();