Make InlineBox::renderer() and related subclass methods return reference.

Source/core/rendering/svg/SVGTextQuery.cpp

Index: Source/core/rendering/svg/SVGTextQuery.cpp
diff --git a/Source/core/rendering/svg/SVGTextQuery.cpp b/Source/core/rendering/svg/SVGTextQuery.cpp
index 464503c8e2b193b45452fc4dd7af4ffe408263f3..d73c2d1ec5c67f1817e54aade8c4e7c61c3924b9 100644
--- a/Source/core/rendering/svg/SVGTextQuery.cpp
+++ b/Source/core/rendering/svg/SVGTextQuery.cpp
@@ -90,7 +90,7 @@ void SVGTextQuery::collectTextBoxesInFlowBox(InlineFlowBox* flowBox)
     for (InlineBox* child = flowBox->firstChild(); child; child = child->nextOnLine()) {
         if (child->isInlineFlowBox()) {
             // Skip generated content.
-            if (!child->renderer()->node())
+            if (!child->renderer().node())
                 continue;
 
             collectTextBoxesInFlowBox(toInlineFlowBox(child));
@@ -112,8 +112,7 @@ bool SVGTextQuery::executeQuery(Data* queryData, ProcessTextFragmentCallback fra
     // Loop over all text boxes
     for (unsigned textBoxPosition = 0; textBoxPosition < textBoxCount; ++textBoxPosition) {
         queryData->textBox = m_textBoxes.at(textBoxPosition);
-        queryData->textRenderer = toRenderSVGInlineText(queryData->textBox->textRenderer());
-        ASSERT(queryData->textRenderer);
+        queryData->textRenderer = &toRenderSVGInlineText(queryData->textBox->textRenderer());
         ASSERT(queryData->textRenderer->style());
         ASSERT(queryData->textRenderer->style()->svgStyle());