Revert of Add compositor support for half-float RGBA buffers and textures

gpu/command_buffer/common/capabilities.cc

Index: gpu/command_buffer/common/capabilities.cc
diff --git a/gpu/command_buffer/common/capabilities.cc b/gpu/command_buffer/common/capabilities.cc
index a15dbe882c7a772644f0ee5875cdb952f19650ba..a7227f6d7c8504ad74e8ac86b6b68b4dbe2fd155 100644
--- a/gpu/command_buffer/common/capabilities.cc
+++ b/gpu/command_buffer/common/capabilities.cc
@@ -9,7 +9,92 @@
 Capabilities::PerStagePrecisions::PerStagePrecisions() {
 }
 
-Capabilities::Capabilities() {}
+Capabilities::Capabilities()
+    : max_combined_texture_image_units(0),
+      max_cube_map_texture_size(0),
+      max_fragment_uniform_vectors(0),
+      max_renderbuffer_size(0),
+      max_texture_image_units(0),
+      max_texture_size(0),
+      max_varying_vectors(0),
+      max_vertex_attribs(0),
+      max_vertex_texture_image_units(0),
+      max_vertex_uniform_vectors(0),
+      max_viewport_width(0),
+      max_viewport_height(0),
+      num_compressed_texture_formats(0),
+      num_shader_binary_formats(0),
+      num_stencil_bits(0),
+      bind_generates_resource_chromium(0),
+      max_3d_texture_size(0),
+      max_array_texture_layers(0),
+      max_color_attachments(0),
+      max_combined_fragment_uniform_components(0),
+      max_combined_uniform_blocks(0),
+      max_combined_vertex_uniform_components(0),
+      max_copy_texture_chromium_size(0),
+      max_draw_buffers(0),
+      max_element_index(0),
+      max_elements_indices(0),
+      max_elements_vertices(0),
+      max_fragment_input_components(0),
+      max_fragment_uniform_blocks(0),
+      max_fragment_uniform_components(0),
+      max_program_texel_offset(0),
+      max_samples(0),
+      max_server_wait_timeout(0),
+      max_texture_lod_bias(0.f),
+      max_transform_feedback_interleaved_components(0),
+      max_transform_feedback_separate_attribs(0),
+      max_transform_feedback_separate_components(0),
+      max_uniform_block_size(0),
+      max_uniform_buffer_bindings(0),
+      max_varying_components(0),
+      max_vertex_output_components(0),
+      max_vertex_uniform_blocks(0),
+      max_vertex_uniform_components(0),
+      min_program_texel_offset(0),
+      num_extensions(0),
+      num_program_binary_formats(0),
+      uniform_buffer_offset_alignment(1),
+      post_sub_buffer(false),
+      swap_buffers_with_damage(false),
+      commit_overlay_planes(false),
+      egl_image_external(false),
+      texture_format_astc(false),
+      texture_format_atc(false),
+      texture_format_bgra8888(false),
+      texture_format_dxt1(false),
+      texture_format_dxt5(false),
+      texture_format_etc1(false),
+      texture_format_etc1_npot(false),
+      texture_rectangle(false),
+      iosurface(false),
+      texture_usage(false),
+      texture_storage(false),
+      discard_framebuffer(false),
+      sync_query(false),
+      future_sync_points(false),
+      blend_equation_advanced(false),
+      blend_equation_advanced_coherent(false),
+      texture_rg(false),
+      texture_half_float_linear(false),
+      image_ycbcr_422(false),
+      image_ycbcr_420v(false),
+      render_buffer_format_bgra8888(false),
+      occlusion_query(false),
+      occlusion_query_boolean(false),
+      timer_queries(false),
+      surfaceless(false),
+      flips_vertically(false),
+      msaa_is_slow(false),
+      disable_one_component_textures(false),
+      disable_multisampling_color_mask_usage(false),
+      disable_webgl_rgb_multisampling_usage(false),
+      chromium_image_rgb_emulation(false),
+      emulate_rgb_buffer_with_rgba(false),
+      major_version(2),
+      minor_version(0) {}
 
 Capabilities::Capabilities(const Capabilities& other) = default;