Add detection for rotation and flip overlay transforms

cc/quads/draw_quad_unittest.cc

Index: cc/quads/draw_quad_unittest.cc
diff --git a/cc/quads/draw_quad_unittest.cc b/cc/quads/draw_quad_unittest.cc
index d55bfa52ac2d21b0c00b1dfcc89730b824fbd224..36a16d36fc9dcdc0823b32375cfc26cbda651cc7 100644
--- a/cc/quads/draw_quad_unittest.cc
+++ b/cc/quads/draw_quad_unittest.cc
@@ -551,7 +551,7 @@ TEST(DrawQuadTest, CopyTextureDrawQuad) {
   gfx::PointF uv_top_left(0.5f, 224.f);
   gfx::PointF uv_bottom_right(51.5f, 260.f);
   const float vertex_opacity[] = { 1.0f, 1.0f, 1.0f, 1.0f };
-  bool flipped = true;
+  bool y_flipped = true;
   bool nearest_neighbor = true;
   CREATE_SHARED_STATE();
 
@@ -564,7 +564,7 @@ TEST(DrawQuadTest, CopyTextureDrawQuad) {
                      uv_bottom_right,
                      SK_ColorTRANSPARENT,
                      vertex_opacity,
-                     flipped,
+                     y_flipped,
                      nearest_neighbor);
   EXPECT_EQ(DrawQuad::TEXTURE_CONTENT, copy_quad->material);
   EXPECT_EQ(visible_rect, copy_quad->visible_rect);
@@ -574,7 +574,7 @@ TEST(DrawQuadTest, CopyTextureDrawQuad) {
   EXPECT_EQ(uv_top_left, copy_quad->uv_top_left);
   EXPECT_EQ(uv_bottom_right, copy_quad->uv_bottom_right);
   EXPECT_FLOAT_ARRAY_EQ(vertex_opacity, copy_quad->vertex_opacity, 4);
-  EXPECT_EQ(flipped, copy_quad->flipped);
+  EXPECT_EQ(y_flipped, copy_quad->y_flipped);
   EXPECT_EQ(nearest_neighbor, copy_quad->nearest_neighbor);
 
   CREATE_QUAD_8_ALL(TextureDrawQuad,
@@ -584,7 +584,7 @@ TEST(DrawQuadTest, CopyTextureDrawQuad) {
                     uv_bottom_right,
                     SK_ColorTRANSPARENT,
                     vertex_opacity,
-                    flipped,
+                    y_flipped,
                     nearest_neighbor);
   EXPECT_EQ(DrawQuad::TEXTURE_CONTENT, copy_quad->material);
   EXPECT_EQ(resource_id, copy_quad->resource_id);
@@ -592,7 +592,7 @@ TEST(DrawQuadTest, CopyTextureDrawQuad) {
   EXPECT_EQ(uv_top_left, copy_quad->uv_top_left);
   EXPECT_EQ(uv_bottom_right, copy_quad->uv_bottom_right);
   EXPECT_FLOAT_ARRAY_EQ(vertex_opacity, copy_quad->vertex_opacity, 4);
-  EXPECT_EQ(flipped, copy_quad->flipped);
+  EXPECT_EQ(y_flipped, copy_quad->y_flipped);
   EXPECT_EQ(nearest_neighbor, copy_quad->nearest_neighbor);
 }
 
@@ -855,7 +855,7 @@ TEST_F(DrawQuadIteratorTest, TextureDrawQuad) {
   gfx::PointF uv_top_left(0.5f, 224.f);
   gfx::PointF uv_bottom_right(51.5f, 260.f);
   const float vertex_opacity[] = { 1.0f, 1.0f, 1.0f, 1.0f };
-  bool flipped = true;
+  bool y_flipped = true;
   bool nearest_neighbor = true;
 
   CREATE_SHARED_STATE();
@@ -868,7 +868,7 @@ TEST_F(DrawQuadIteratorTest, TextureDrawQuad) {
                      uv_bottom_right,
                      SK_ColorTRANSPARENT,
                      vertex_opacity,
-                     flipped,
+                     y_flipped,
                      nearest_neighbor);
   EXPECT_EQ(resource_id, quad_new->resource_id);
   EXPECT_EQ(1, IterateAndCount(quad_new));