cc: Turn SharedQuadState into a struct-like class similar to DrawQuads.

cc/render_pass.cc

 // Copyright 2011 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/render_pass.h"
 
 #include "cc/layer_impl.h"
 #include "cc/math_util.h"
 #include "cc/occlusion_tracker.h"
 #include "cc/quad_culler.h"
@@ skipping 72 matching lines @@
     Region fillRegion = occlusionTracker.computeVisibleRegionInScreen();
     if (fillRegion.IsEmpty())
         return;
 
     bool forSurface = false;
     QuadCuller quadCuller(m_quadList, m_sharedQuadStateList, rootLayer, &occlusionTracker, rootLayer->showDebugBorders(), forSurface);
 
     // Manually create the quad state for the gutter quads, as the root layer
     // doesn't have any bounds and so can't generate this itself.
     // FIXME: Make the gutter quads generated by the solid color layer (make it smarter about generating quads to fill unoccluded areas).
+
+    DCHECK(rootLayer->screenSpaceTransform().isInvertible());
+
     gfx::Rect rootTargetRect = rootLayer->renderSurface()->contentRect();
     float opacity = 1;
-    SharedQuadState* sharedQuadState = quadCuller.useSharedQuadState(SharedQuadState::create(rootLayer->drawTransform(), rootTargetRect, rootTargetRect, opacity));
-    DCHECK(rootLayer->screenSpaceTransform().isInvertible());
+    SharedQuadState* sharedQuadState = quadCuller.useSharedQuadState(SharedQuadState::Create());
+    sharedQuadState->SetAll(rootLayer->drawTransform(), rootTargetRect, rootTargetRect, opacity);
+
     WebTransformationMatrix transformToLayerSpace = rootLayer->screenSpaceTransform().inverse();
     for (Region::Iterator fillRects(fillRegion); fillRects.has_rect(); fillRects.next()) {
         // The root layer transform is composed of translations and scales only, no perspective, so mapping is sufficient.
         gfx::Rect layerRect = MathUtil::mapClippedRect(transformToLayerSpace, fillRects.rect());
         // Skip the quad culler and just append the quads directly to avoid occlusion checks.
         scoped_ptr<SolidColorDrawQuad> quad = SolidColorDrawQuad::Create();
         quad->SetNew(sharedQuadState, layerRect, screenBackgroundColor);
         m_quadList.append(quad.PassAs<DrawQuad>());
     }
 }
 
 void RenderPass::setFilter(SkImageFilter* filter) {
     SkRefCnt_SafeAssign(m_filter, filter);
 }
 
 }  // namespace cc