Optionally clear PlatformCanvas instances.

skia/ext/platform_canvas_win.cc

Index: skia/ext/platform_canvas_win.cc
===================================================================
--- skia/ext/platform_canvas_win.cc	(revision 123041)
+++ skia/ext/platform_canvas_win.cc	(working copy)
@@ -73,31 +73,31 @@
 // Restore the optimization options.
 #pragma optimize("", on)
 
-PlatformCanvas::PlatformCanvas(int width, int height, bool is_opaque) {
+PlatformCanvas::PlatformCanvas(int width, int height, int flags) {
   TRACE_EVENT2("skia", "PlatformCanvas::PlatformCanvas",
                "width", width, "height", height);
-  initialize(width, height, is_opaque, NULL);
+  initialize(width, height, flags, NULL);
 }
 
 PlatformCanvas::PlatformCanvas(int width,
                                int height,
-                               bool is_opaque,
+                               int flags,
                                HANDLE shared_section) {
   TRACE_EVENT2("skia", "PlatformCanvas::PlatformCanvas",
                "width", width, "height", height);
-  initialize(width, height, is_opaque, shared_section);
+  initialize(width, height, flags, shared_section);
 }
 
 PlatformCanvas::~PlatformCanvas() {
 }
 
 bool PlatformCanvas::initialize(int width,
-                               int height,
-                               bool is_opaque,
-                               HANDLE shared_section) {
+                                int height,
+                                int flags,
+                                HANDLE shared_section) {
   if (initializeWithDevice(BitmapPlatformDevice::create(width,
                                                         height,
-                                                        is_opaque,
+                                                        flags,
                                                         shared_section)))
     return true;
   // Investigate we failed. If we know the reason, crash in a specific place.