Removal of dependencies on PlatformDevice classes.

chrome/browser/renderer_host/render_widget_host_view_win.cc

Index: chrome/browser/renderer_host/render_widget_host_view_win.cc
===================================================================
--- chrome/browser/renderer_host/render_widget_host_view_win.cc	(revision 85672)
+++ chrome/browser/renderer_host/render_widget_host_view_win.cc	(working copy)
@@ -169,7 +169,7 @@
                       HDC backing_store_dc,
                       HDC paint_dc) {
   gfx::CanvasSkia canvas(paint_rect.width(), paint_rect.height(), true);
-  HDC dc = canvas.beginPlatformPaint();
+  HDC dc = skia::BeginPlatformPaint(&canvas);
   BitBlt(dc,
          0,
          0,
@@ -179,10 +179,10 @@
          paint_rect.x(),
          paint_rect.y(),
          SRCCOPY);
-  canvas.endPlatformPaint();
+  skia::EndPlatformPaint(&canvas);
   canvas.FillRectInt(color, 0, 0, paint_rect.width(), paint_rect.height());
-  canvas.getTopPlatformDevice().drawToHDC(paint_dc, paint_rect.x(),
-                                          paint_rect.y(), NULL);
+  skia::DrawToNativeContext(&canvas, paint_dc, paint_rect.x(),
+                            paint_rect.y(), NULL);
 }
 
 // The plugin wrapper window which lives in the browser process has this proc
@@ -961,8 +961,8 @@
                         dc_rect.right - dc_rect.left,
                         dc_rect.bottom - dc_rect.top);
 
-    canvas.getTopPlatformDevice().drawToHDC(*dc, dirty_rect.left,
-                                            dirty_rect.top, NULL);
+    skia::DrawToNativeContext(&canvas, *dc, dirty_rect.left, dirty_rect.top,
+                              NULL);
   } else {
     HBRUSH white_brush = reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
     dc->FillRect(&dirty_rect, white_brush);