gfx: Make conversions from gfx::Point to PointF explicit.

cc/output/gl_renderer.cc

 // Copyright 2010 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/output/gl_renderer.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 #include <string>
@@ skipping 1860 matching lines @@
                  vertex_tex_scale_y);
 
   SetBlendEnabled(quad->ShouldDrawWithBlending());
 
   SetShaderOpacity(quad->shared_quad_state->opacity, uniforms.alpha_location);
 
   // Pass quad coordinates to the uniform in the same order as GeometryBinding
   // does, then vertices will match the texture mapping in the vertex buffer.
   // The method SetShaderQuadF() changes the order of vertices and so it's
   // not used here.
-  gfx::QuadF tile_quad(gfx::RectF(quad->visible_rect));
+  auto tile_quad = gfx::QuadF(gfx::RectF(quad->visible_rect));
   float width = quad->visible_rect.width();
   float height = quad->visible_rect.height();
-  gfx::PointF top_left = quad->visible_rect.origin();
+  auto top_left = gfx::PointF(quad->visible_rect.origin());
   if (clip_region) {
     tile_quad = *clip_region;
     float gl_uv[8] = {
         (tile_quad.p4().x() - top_left.x()) / width,
         (tile_quad.p4().y() - top_left.y()) / height,
         (tile_quad.p1().x() - top_left.x()) / width,
         (tile_quad.p1().y() - top_left.y()) / height,
         (tile_quad.p2().x() - top_left.x()) / width,
         (tile_quad.p2().y() - top_left.y()) / height,
         (tile_quad.p3().x() - top_left.x()) / width,
@@ skipping 1635 matching lines @@
       texture_id = pending_overlay_resources_.back()->texture_id();
     }
 
     context_support_->ScheduleOverlayPlane(
         overlay.plane_z_order, overlay.transform, texture_id,
         ToNearestRect(overlay.display_rect), overlay.uv_rect);
   }
 }
 
 }  // namespace cc