Implement interfaces in PaintInfo and make it a class.

Source/core/rendering/RenderInputSpeech.cpp

Index: Source/core/rendering/RenderInputSpeech.cpp
diff --git a/Source/core/rendering/RenderInputSpeech.cpp b/Source/core/rendering/RenderInputSpeech.cpp
index c6e83eec16caa47af85e39f136b2879c77335e6c..5d62fd520e3326367a3fe87026905ab813e7c7e4 100644
--- a/Source/core/rendering/RenderInputSpeech.cpp
+++ b/Source/core/rendering/RenderInputSpeech.cpp
@@ -53,7 +53,7 @@ void RenderInputSpeech::adjustInputFieldSpeechButtonStyle(RenderStyle* style, El
     style->setHeight(Length(speechButtonSize, Fixed));
 }
 
-bool RenderInputSpeech::paintInputFieldSpeechButton(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+bool RenderInputSpeech::paintInputFieldSpeechButton(RenderObject* object, PaintInfo& paintInfo, const IntRect& rect)
 {
     Element* element = object->node()->isElementNode() ? toElement(object->node()) : 0;
     if (!element || !element->isInputFieldSpeechButtonElement())
@@ -92,7 +92,7 @@ bool RenderInputSpeech::paintInputFieldSpeechButton(RenderObject* object, const
         image = imageStateRecording.get();
     else if (speechButton->state() == InputFieldSpeechButtonElement::Recognizing)
         image = imageStateWaiting.get();
-    paintInfo.context->drawImage(image, pixelSnappedIntRect(buttonRect));
+    paintInfo.getContext()->drawImage(image, pixelSnappedIntRect(buttonRect));
 
     return false;
 }