Fixes a bug when the framebuffer is cleared with invalid scissor rect

cc/software_renderer.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/software_renderer.h"
 
 #include "base/debug/trace_event.h"
 #include "cc/debug_border_draw_quad.h"
 #include "cc/math_util.h"
 #include "cc/render_pass_draw_quad.h"
@@ skipping 131 matching lines @@
     setDrawViewportSize(framebufferRect.size());
 
     return true;
 }
 
 void SoftwareRenderer::setScissorTestRect(const gfx::Rect& scissorRect)
 {
     m_skCurrentCanvas->clipRect(gfx::RectToSkRect(scissorRect), SkRegion::kReplace_Op);
 }
 
-void SoftwareRenderer::clearFramebuffer(DrawingFrame& frame)
+void SoftwareRenderer::clearFramebuffer(DrawingFrame& frame, bool full)
 {
     if (frame.currentRenderPass->has_transparent_background) {
         m_skCurrentCanvas->clear(SkColorSetARGB(0, 0, 0, 0));
     } else {
 #ifndef NDEBUG
         // On DEBUG builds, opaque render passes are cleared to blue to easily see regions that were not drawn on the screen.
         m_skCurrentCanvas->clear(SkColorSetARGB(255, 0, 0, 255));
 #endif
     }
 }
@@ skipping 209 matching lines @@
 }
 
 void SoftwareRenderer::setVisible(bool visible)
 {
     if (m_visible == visible)
         return;
     m_visible = visible;
 }
 
 }  // namespace cc