ooxml: Preserve blur effect on shapes.

Reused the code for other effects just adding the new attribute
"grow".

I didn't add a unit test for this effect because I found no way to
apply it to an object in Word, but it's technically part of the
standard.

Change-Id: I391aff17f59d49d6bf339a71481dcdb51c537c9e

oox/source/drawingml/effectpropertiescontext.cxx

@@ -80,6 +80,9 @@ void EffectPropertiesContext::saveUnsupportedAttribs( const AttributeList& rAttr
     if( rAttribs.hasAttribute( XML_stPos ) )
         mrEffectProperties.appendUnsupportedEffectAttrib( "stPos",
                                                           makeAny( rAttribs.getInteger( XML_stPos, 0 ) ) );
+    if( rAttribs.hasAttribute( XML_grow ) )
+        mrEffectProperties.appendUnsupportedEffectAttrib( "grow",
+                                                          makeAny( rAttribs.getInteger( XML_grow, 0 ) ) );
 }
 
 ContextHandlerRef EffectPropertiesContext::onCreateContext( sal_Int32 nElement, const AttributeList& rAttribs )
@@ -109,6 +112,7 @@ ContextHandlerRef EffectPropertiesContext::onCreateContext( sal_Int32 nElement,
         case A_TOKEN( glow ):
         case A_TOKEN( softEdge ):
         case A_TOKEN( reflection ):
+        case A_TOKEN( blur ):
         {
             if( nElement == A_TOKEN( glow ) )
                 mrEffectProperties.msUnsupportedEffectName = "glow";
@@ -116,6 +120,8 @@ ContextHandlerRef EffectPropertiesContext::onCreateContext( sal_Int32 nElement,
                 mrEffectProperties.msUnsupportedEffectName = "softEdge";
             else if( nElement == A_TOKEN( reflection ) )
                 mrEffectProperties.msUnsupportedEffectName = "reflection";
+            else if( nElement == A_TOKEN( blur ) )
+                mrEffectProperties.msUnsupportedEffectName = "blur";
             saveUnsupportedAttribs( rAttribs );
             return new ColorContext( *this, mrEffectProperties.maShadow.moShadowColor );
         }

oox/source/export/drawingml.cxx

@@ -2102,7 +2102,7 @@ void DrawingML::WriteShapeEffects( Reference< XPropertySet > rXPropSet )
     {
         if( aEffectProps[i].Name == "outerShdw" || aEffectProps[i].Name == "innerShdw"
                 || aEffectProps[i].Name == "glow" || aEffectProps[i].Name == "softEdge"
-                || aEffectProps[i].Name == "reflection" )
+                || aEffectProps[i].Name == "reflection" || aEffectProps[i].Name == "blur" )
         {
             // assign the proper tag and enable bContainsColor if necessary
             if( aEffectProps[i].Name == "outerShdw" )
@@ -2124,6 +2124,8 @@ void DrawingML::WriteShapeEffects( Reference< XPropertySet > rXPropSet )
                 nEffectToken = FSNS( XML_a, XML_softEdge );
             else if( aEffectProps[i].Name == "reflection" )
                 nEffectToken = FSNS( XML_a, XML_reflection );
+            else if( aEffectProps[i].Name == "blur" )
+                nEffectToken = FSNS( XML_a, XML_blur );
 
             // read tag attributes
             uno::Sequence< beans::PropertyValue > aOuterShdwProps;
@@ -2220,6 +2222,12 @@ void DrawingML::WriteShapeEffects( Reference< XPropertySet > rXPropSet )
                     aOuterShdwProps[j].Value >>= nVal;
                     aOuterShdwAttrList->add( XML_stPos, OString::number( nVal ).getStr() );
                 }
+                else if( aOuterShdwProps[j].Name == "grow" )
+                {
+                    sal_Int32 nVal = 0;
+                    aOuterShdwProps[j].Value >>= nVal;
+                    aOuterShdwAttrList->add( XML_grow, OString::number( nVal ).getStr() );
+                }
             }
         }
         else if(aEffectProps[i].Name == "ShadowRgbClr")