Support videos with JPEG color range in GPU YUV convert path.

cc/output/gl_renderer.cc

Index: cc/output/gl_renderer.cc
diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc
index bb1ecbf6bc61f6691d5eb5fd55690d0448eee2ae..c2529d9aa6a92b0d69ec1201802a1206c702c7a0 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -1779,7 +1779,15 @@ void GLRenderer::DrawYUVVideoQuad(const DrawingFrame* frame,
   // http://www.fourcc.org/fccyvrgb.php
   float yuv_to_rgb[9] = {1.164f, 1.164f, 1.164f, 0.0f, -.391f,
                          2.018f, 1.596f, -.813f, 0.0f, };
-  GLC(gl_, gl_->UniformMatrix3fv(yuv_matrix_location, 1, 0, yuv_to_rgb));
+  float yuv_to_rgb_jpeg[9] = {
+      1.f, 1.f, 1.f, 0.0f, -.34414f, 1.772f, 1.402f, -.71414, 0.0f,
+  };
+  GLC(gl_,
+      gl_->UniformMatrix3fv(
+          yuv_matrix_location,
+          1,
+          0,
+          quad->has_jpeg_color_range ? yuv_to_rgb_jpeg : yuv_to_rgb));
 
   // These values map to 16, 128, and 128 respectively, and are computed
   // as a fraction over 256 (e.g. 16 / 256 = 0.0625).
@@ -1788,7 +1796,17 @@ void GLRenderer::DrawYUVVideoQuad(const DrawingFrame* frame,
   //   U - 128  : Turns unsigned U into signed U [-128,127]
   //   V - 128  : Turns unsigned V into signed V [-128,127]
   float yuv_adjust[3] = {-0.0625f, -0.5f, -0.5f, };
-  GLC(gl_, gl_->Uniform3fv(yuv_adj_location, 1, yuv_adjust));
+
+  // Same as above, but without the head and footroom.
+  float yuv_adjust_jpeg[3] = {
+      0.0f, -0.5f, -0.5f,
+  };
+
+  GLC(gl_,
+      gl_->Uniform3fv(
+          yuv_adj_location,
+          1,
+          quad->has_jpeg_color_range ? yuv_adjust_jpeg : yuv_adjust));
 
   SetShaderOpacity(quad->opacity(), alpha_location);
   DrawQuadGeometry(frame, quad->quadTransform(), quad->rect, matrix_location);