Use 'int' content quad coordinates all the way. (not for commit)

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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 2041 matching lines @@
         (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,
         (tile_quad.p3().y() - top_left.y()) / height,
     };
     PrepareGeometry(CLIPPED_BINDING);
     clipped_geometry_->InitializeCustomQuadWithUVs(
         gfx::QuadF(gfx::RectF(quad->visible_rect)), gl_uv);
+    float gl_quad[8] = {
+        tile_quad.p4().x(), tile_quad.p4().y(), tile_quad.p1().x(),
+        tile_quad.p1().y(), tile_quad.p2().x(), tile_quad.p2().y(),
+        tile_quad.p3().x(), tile_quad.p3().y(),
+    };
+    gl_->Uniform2fv(uniforms.quad_location, 4, gl_quad);
   } else {
     PrepareGeometry(SHARED_BINDING);
+    float gl_quad[8] = {
+        quad->visible_rect.bottom_left().x(),
+        quad->visible_rect.bottom_left().y(),
+        quad->visible_rect.origin().x(),
+        quad->visible_rect.origin().y(),
+        quad->visible_rect.top_right().x(),
+        quad->visible_rect.top_right().y(),
+        quad->visible_rect.bottom_right().x(),
+        quad->visible_rect.bottom_right().y(),
+    };
+    gl_->Uniform2fv(uniforms.quad_location, 4, gl_quad);
   }
-  float gl_quad[8] = {
-      tile_quad.p4().x(), tile_quad.p4().y(), tile_quad.p1().x(),
-      tile_quad.p1().y(), tile_quad.p2().x(), tile_quad.p2().y(),
-      tile_quad.p3().x(), tile_quad.p3().y(),
-  };
-  gl_->Uniform2fv(uniforms.quad_location, 4, gl_quad);
 
   static float gl_matrix[16];
   ToGLMatrix(&gl_matrix[0],
              frame->projection_matrix *
                  quad->shared_quad_state->quad_to_target_transform);
   gl_->UniformMatrix4fv(uniforms.matrix_location, 1, false, &gl_matrix[0]);
 
   gl_->DrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
 }
 
@@ skipping 1605 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