Iterate through all types of DrawQuad to get largest size

Add logic to go through all types of DrawQuad to get largest size.

Review URL: https://codereview.chromium.org/751563004

Cr-Commit-Position: refs/heads/master@{#305437}

cc/quads/largest_draw_quad.cc

@@ -6,15 +6,62 @@
 
 #include <algorithm>
 
+#include "cc/quads/checkerboard_draw_quad.h"
+#include "cc/quads/debug_border_draw_quad.h"
+#include "cc/quads/io_surface_draw_quad.h"
+#include "cc/quads/picture_draw_quad.h"
 #include "cc/quads/render_pass_draw_quad.h"
+#include "cc/quads/solid_color_draw_quad.h"
 #include "cc/quads/stream_video_draw_quad.h"
+#include "cc/quads/surface_draw_quad.h"
+#include "cc/quads/texture_draw_quad.h"
+#include "cc/quads/tile_draw_quad.h"
+#include "cc/quads/yuv_video_draw_quad.h"
+
+namespace {
+const size_t kLargestDrawQuadSize =
+    sizeof(cc::RenderPassDrawQuad) > sizeof(cc::StreamVideoDrawQuad)
+        ? sizeof(cc::RenderPassDrawQuad)
+        : sizeof(cc::StreamVideoDrawQuad);
+}  // namespace
 
 namespace cc {
 
 size_t LargestDrawQuadSize() {
-  // The largest quad is either a RenderPassDrawQuad or a StreamVideoDrawQuad
-  // depends on hardware structure.
-  return std::max(sizeof(RenderPassDrawQuad), sizeof(StreamVideoDrawQuad));
+  // Currently the largest quad is either a RenderPassDrawQuad or a
+  // StreamVideoDrawQuad depends on hardware structure.
+
+  // Use compile assert to make sure largest is actually larger than all other
+  // type of draw quads.
+  COMPILE_ASSERT(sizeof(CheckerboardDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. CheckerboardDrawQuad is "
+                 "currently largest.");
+  COMPILE_ASSERT(sizeof(DebugBorderDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. DebugBorderDrawQuad is "
+                 "currently largest.");
+  COMPILE_ASSERT(sizeof(IOSurfaceDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. IOSurfaceDrawQuad is "
+                 "currently largest.");
+  COMPILE_ASSERT(sizeof(PictureDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. PictureDrawQuad is "
+                 "currently largest.");
+  COMPILE_ASSERT(sizeof(TextureDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. TextureDrawQuad is "
+                 "currently largest.");
+  COMPILE_ASSERT(sizeof(SolidColorDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. SolidColorDrawQuad is "
+                 "currently largest.");
+  COMPILE_ASSERT(sizeof(SurfaceDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. SurfaceDrawQuad is "
+                 "currently largest.");
+  COMPILE_ASSERT(sizeof(TileDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. TileDrawQuad is "
+                 "currently largest.");
+  COMPILE_ASSERT(sizeof(YUVVideoDrawQuad) <= kLargestDrawQuadSize,
+                 "Largest Draw Quad size needs update. YUVVideoDrawQuad is "
+                 "currently largest.");
+
+  return kLargestDrawQuadSize;
 }
 
 }  // namespace cc