[cc] Add nearest neighbor filtering for TextureLayer.

Blink side is here (depends on this CL):
https://codereview.chromium.org/562583002/

This CL also depends on another blink side change here:
https://codereview.chromium.org/699103002/

BUG=134040

Review URL: https://codereview.chromium.org/558083002

Cr-Commit-Position: refs/heads/master@{#306768}

5 files changed, 15 insertions, 5 deletions

diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc
index 27f40eb..a32778a 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -2054,8 +2054,10 @@ void GLRenderer::FlushTextureQuadCache() {
   GLC(gl_, gl_->Uniform1i(draw_cache_.sampler_location, 0));
 
   // Assume the current active textures is 0.
-  ResourceProvider::ScopedReadLockGL locked_quad(resource_provider_,
-                                                 draw_cache_.resource_id);
+  ResourceProvider::ScopedSamplerGL locked_quad(
+      resource_provider_,
+      draw_cache_.resource_id,
+      draw_cache_.nearest_neighbor ? GL_NEAREST : GL_LINEAR);
   DCHECK_EQ(GL_TEXTURE0, GetActiveTextureUnit(gl_));
   GLC(gl_, gl_->BindTexture(GL_TEXTURE_2D, locked_quad.texture_id()));
 
@@ -2133,12 +2135,14 @@ void GLRenderer::EnqueueTextureQuad(const DrawingFrame* frame,
   if (draw_cache_.program_id != binding.program_id ||
       draw_cache_.resource_id != resource_id ||
       draw_cache_.needs_blending != quad->ShouldDrawWithBlending() ||
+      draw_cache_.nearest_neighbor != quad->nearest_neighbor ||
       draw_cache_.background_color != quad->background_color ||
       draw_cache_.matrix_data.size() >= 8) {
     FlushTextureQuadCache();
     draw_cache_.program_id = binding.program_id;
     draw_cache_.resource_id = resource_id;
     draw_cache_.needs_blending = quad->ShouldDrawWithBlending();
+    draw_cache_.nearest_neighbor = quad->nearest_neighbor;
     draw_cache_.background_color = quad->background_color;
 
     draw_cache_.uv_xform_location = binding.tex_transform_location;
diff --git a/cc/output/gl_renderer_draw_cache.cc b/cc/output/gl_renderer_draw_cache.cc
index a0004f2..91581f4 100644
--- a/cc/output/gl_renderer_draw_cache.cc
+++ b/cc/output/gl_renderer_draw_cache.cc
@@ -10,6 +10,7 @@ TexturedQuadDrawCache::TexturedQuadDrawCache()
     : program_id(-1),
       resource_id(-1),
       needs_blending(false),
+      nearest_neighbor(false),
       background_color(0),
       uv_xform_location(-1),
       background_color_location(-1),
diff --git a/cc/output/gl_renderer_draw_cache.h b/cc/output/gl_renderer_draw_cache.h
index f828418..a16c8a5 100644
--- a/cc/output/gl_renderer_draw_cache.h
+++ b/cc/output/gl_renderer_draw_cache.h
@@ -33,6 +33,7 @@ struct TexturedQuadDrawCache {
   int program_id;
   int resource_id;
   bool needs_blending;
+  bool nearest_neighbor;
   SkColor background_color;
 
   // Information about the program binding that is required to draw.
diff --git a/cc/output/overlay_unittest.cc b/cc/output/overlay_unittest.cc
index 33c6f4a..bb7451d 100644
--- a/cc/output/overlay_unittest.cc
+++ b/cc/output/overlay_unittest.cc
@@ -152,6 +152,7 @@ TextureDrawQuad* CreateCandidateQuadAt(ResourceProvider* resource_provider,
   ResourceProvider::ResourceId resource_id = CreateResource(resource_provider);
   bool premultiplied_alpha = false;
   bool flipped = false;
+  bool nearest_neighbor = false;
   float vertex_opacity[4] = {1.0f, 1.0f, 1.0f, 1.0f};
 
   TextureDrawQuad* overlay_quad =
@@ -166,7 +167,8 @@ TextureDrawQuad* CreateCandidateQuadAt(ResourceProvider* resource_provider,
                        kUVBottomRight,
                        SK_ColorTRANSPARENT,
                        vertex_opacity,
-                       flipped);
+                       flipped,
+                       nearest_neighbor);
 
   return overlay_quad;
 }
diff --git a/cc/output/renderer_pixeltest.cc b/cc/output/renderer_pixeltest.cc
index 0c2bc3d..53b5b98 100644
--- a/cc/output/renderer_pixeltest.cc
+++ b/cc/output/renderer_pixeltest.cc
@@ -152,7 +152,8 @@ void CreateTestTextureDrawQuad(const gfx::Rect& rect,
                gfx::PointF(1.0f, 1.0f),  // uv_bottom_right
                background_color,
                vertex_opacity,
-               false);  // flipped
+               false,   // flipped
+               false);  // nearest_neighbor
 }
 
 typedef ::testing::Types<GLRenderer,
@@ -2296,7 +2297,8 @@ TYPED_TEST(RendererPixelTest, WrapModeRepeat) {
           this->device_viewport_size_.height() / texture_rect.height()),
       SK_ColorWHITE,
       vertex_opacity,
-      false);  // flipped
+      false,   // flipped
+      false);  // nearest_neighbor
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());