Build fix: moving more inline functions into header

TBR=reed

git-svn-id: http://skia.googlecode.com/svn/trunk@8710 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/image/SkSurface_Base.h b/src/image/SkSurface_Base.h
index fea9344..32cfc88 100644
--- a/src/image/SkSurface_Base.h
+++ b/src/image/SkSurface_Base.h
@@ -9,6 +9,7 @@
 #define SkSurface_Base_DEFINED
 
 #include "SkSurface.h"
+#include "SkCanvas.h"
 
 class SkSurface_Base : public SkSurface {
 public:
@@ -88,4 +89,10 @@
     return fCachedImage;
 }
 
+void SkSurface_Base::installIntoCanvasForDirtyNotification() {
+    if (NULL != fCachedCanvas) {
+        fCachedCanvas->setSurfaceBase(this);
+    }
+}
+
 #endif