Add detection for rotation and flip overlay transforms

cc/quads/texture_draw_quad.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/quads/texture_draw_quad.h"
 
 #include "base/logging.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "base/values.h"
 #include "cc/base/math_util.h"
 #include "ui/gfx/geometry/vector2d_f.h"
 
 namespace cc {
 
 TextureDrawQuad::TextureDrawQuad()
     : resource_id(0),
       premultiplied_alpha(false),
       background_color(SK_ColorTRANSPARENT),
-      flipped(false),
+      y_flipped(false),
       nearest_neighbor(false) {
   this->vertex_opacity[0] = 0.f;
   this->vertex_opacity[1] = 0.f;
   this->vertex_opacity[2] = 0.f;
   this->vertex_opacity[3] = 0.f;
 }
 
 void TextureDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
                              const gfx::Rect& rect,
                              const gfx::Rect& opaque_rect,
                              const gfx::Rect& visible_rect,
                              unsigned resource_id,
                              bool premultiplied_alpha,
                              const gfx::PointF& uv_top_left,
                              const gfx::PointF& uv_bottom_right,
                              SkColor background_color,
                              const float vertex_opacity[4],
-                             bool flipped,
+                             bool y_flipped,
                              bool nearest_neighbor) {
   bool needs_blending = vertex_opacity[0] != 1.0f || vertex_opacity[1] != 1.0f
       || vertex_opacity[2] != 1.0f || vertex_opacity[3] != 1.0f;
   DrawQuad::SetAll(shared_quad_state, DrawQuad::TEXTURE_CONTENT, rect,
                    opaque_rect, visible_rect, needs_blending);
   this->resource_id = resource_id;
   this->premultiplied_alpha = premultiplied_alpha;
   this->uv_top_left = uv_top_left;
   this->uv_bottom_right = uv_bottom_right;
   this->background_color = background_color;
   this->vertex_opacity[0] = vertex_opacity[0];
   this->vertex_opacity[1] = vertex_opacity[1];
   this->vertex_opacity[2] = vertex_opacity[2];
   this->vertex_opacity[3] = vertex_opacity[3];
-  this->flipped = flipped;
+  this->y_flipped = y_flipped;
   this->nearest_neighbor = nearest_neighbor;
 }
 
 void TextureDrawQuad::SetAll(const SharedQuadState* shared_quad_state,
                              const gfx::Rect& rect,
                              const gfx::Rect& opaque_rect,
                              const gfx::Rect& visible_rect,
                              bool needs_blending,
                              unsigned resource_id,
                              bool premultiplied_alpha,
                              const gfx::PointF& uv_top_left,
                              const gfx::PointF& uv_bottom_right,
                              SkColor background_color,
                              const float vertex_opacity[4],
-                             bool flipped,
+                             bool y_flipped,
                              bool nearest_neighbor) {
   DrawQuad::SetAll(shared_quad_state, DrawQuad::TEXTURE_CONTENT, rect,
                    opaque_rect, visible_rect, needs_blending);
   this->resource_id = resource_id;
   this->premultiplied_alpha = premultiplied_alpha;
   this->uv_top_left = uv_top_left;
   this->uv_bottom_right = uv_bottom_right;
   this->background_color = background_color;
   this->vertex_opacity[0] = vertex_opacity[0];
   this->vertex_opacity[1] = vertex_opacity[1];
   this->vertex_opacity[2] = vertex_opacity[2];
   this->vertex_opacity[3] = vertex_opacity[3];
-  this->flipped = flipped;
+  this->y_flipped = y_flipped;
   this->nearest_neighbor = nearest_neighbor;
 }
 
 void TextureDrawQuad::IterateResources(
     const ResourceIteratorCallback& callback) {
   resource_id = callback.Run(resource_id);
 }
 
 const TextureDrawQuad* TextureDrawQuad::MaterialCast(const DrawQuad* quad) {
   DCHECK(quad->material == DrawQuad::TEXTURE_CONTENT);
   return static_cast<const TextureDrawQuad*>(quad);
 }
 
 void TextureDrawQuad::ExtendValue(base::trace_event::TracedValue* value) const {
   value->SetInteger("resource_id", resource_id);
   value->SetBoolean("premultiplied_alpha", premultiplied_alpha);
 
   MathUtil::AddToTracedValue("uv_top_left", uv_top_left, value);
   MathUtil::AddToTracedValue("uv_bottom_right", uv_bottom_right, value);
 
   value->SetInteger("background_color", background_color);
 
   value->BeginArray("vertex_opacity");
   for (size_t i = 0; i < 4; ++i)
     value->AppendDouble(vertex_opacity[i]);
   value->EndArray();
 
-  value->SetBoolean("flipped", flipped);
+  value->SetBoolean("y_flipped", y_flipped);
   value->SetBoolean("nearest_neighbor", nearest_neighbor);
 }
 
 }  // namespace cc